Finding the Fourth Proportional to 117.49, 161.99 and 94.21
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Solution
The fourth proportional to 117.49, 161.99 and 94.21 is: 129.89
Step by Step Solution
- Step 1: Write the proportion equation
117.49 : 161.99 = 94.21 : x - Step 2: Convert to fraction form
117.49/161.99 = 94.21/x - Step 3: Cross multiply
117.49x = 161.99 × 94.21 - Step 4: Simplify right side
117.49x = 15,261.08 - Step 5: Solve for x
x = 15,261.08/117.49 - Step 6: Final answer
x = 129.89
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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.