Question

according to the rank-size rule, if the largest city in country a has 100,000 people, how many people will live in country a's fourth-largest city?

Answer 1

25000 people will live in the country's 4th largest city

Explanation:

The rank-size rule says that the population of a city within a country will be approximately the largest city's population divided by the rank of the city in question

So,

the 4th largest city will have 1/4th the population of the largest city,

so,

population of 4th largest city = 100000/4

= 25000