Finding the Fourth Proportional to 138.92, 207.97 and 118.87
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Solution
The fourth proportional to 138.92, 207.97 and 118.87 is: 177.95
Step by Step Solution
- Step 1: Write the proportion equation
138.92 : 207.97 = 118.87 : x - Step 2: Convert to fraction form
138.92/207.97 = 118.87/x - Step 3: Cross multiply
138.92x = 207.97 × 118.87 - Step 4: Simplify right side
138.92x = 24,720.58 - Step 5: Solve for x
x = 24,720.58/138.92 - Step 6: Final answer
x = 177.95
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.