Finding the Fourth Proportional to 117.32, 161.68 and 113.99
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Solution
The fourth proportional to 117.32, 161.68 and 113.99 is: 157.09
Step by Step Solution
- Step 1: Write the proportion equation
117.32 : 161.68 = 113.99 : x - Step 2: Convert to fraction form
117.32/161.68 = 113.99/x - Step 3: Cross multiply
117.32x = 161.68 × 113.99 - Step 4: Simplify right side
117.32x = 18,429.90 - Step 5: Solve for x
x = 18,429.90/117.32 - Step 6: Final answer
x = 157.09
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.