Question

The sum of the third and the fourth terms of a geometric sequences that is constantly increasing is 72, and the difference between the fifth and the third terms of the same sequence is 144.​

Answer 1

We have that the first term of the progression is

b=4

From the Question we are told that

Third terms of a Geometric Progression is 48

Sum of third and fourth terms is 144

Generally the equation for the common ratio is mathematically given as

r=3

Therefore

Since

b=4