Well...this isn't too bad
Let the first growth factor = 2
The terms are
4 , 4(2), 4(2)^2, 4(2)^3 =
4, 8 , 16, 32
For the second, GM.....see if you can do it with a growth factor of 3
If you get stuck, let me know
Let the second growth factor = 3
The terms are
4 , 4(3), 4(3)^2, 4(3)^3 =
4, 12, 36, 108
The growth factor is the same as the common ratio.
--7H3_5H4D0W