If The Fourth Term Of A Geometric Sequence Is 81 And 8th Term Is 16, What Is The Second Term?

If the fourth term of a geometric sequence is 81 and 8th term is 16, what is the second term?

 

The common ratio is 2/3

hence, the sequence is:

273.375, 182.25, 121.5, 81, 54, 36, 24, 16

Therefore, the second term is 182.25