Final answer:
The ratio obtained by dividing the mortgage amount by the property's value is the Loan-to-Value (LTV) ratio, representing the risk level to the lender.
Step-by-step explanation:
The ratio in question that is derived by dividing the amount of the mortgage by the value of the property is known as the Loan-to-Value (LTV) ratio. This ratio is expressed as a percentage, and it highlights the relationship between the loan amount and the equity the borrower has in the property. A higher LTV ratio indicates a higher risk for the lender as it means the loan amount is higher relative to the borrower's equity. This is a crucial metric used by banks to assess the riskiness of a mortgage loan. In the context of the primary and secondary loan markets, the LTV ratio can affect how much banks and financial institutions are willing to pay for a mortgage loan in the secondary market. Financial institutions may pay less for a loan with a high LTV ratio, due to the increased risk of borrower default.