Find the common ratio of the geometric sequence 5, __, __, 135, ...405343 and 1 third

asked Dec 11, 2023 196k views

3 votes

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2 votes

Given

the geometric sequence 5, __, __, 135, ..

Answer

First-term a= 5

$\begin{gathered} \text{Forth term= ar}^3=135 \\ 5r^3=135 \\ r^3=(135)/(5) \\ r^3=27 \\ r=3 \end{gathered}$

Common ratio = 3

Crow answered Dec 17, 2023

by Crow

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