Finding the Fourth Proportional to 138,373.61, 207,565.88 and 38,542.53
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Solution
The fourth proportional to 138,373.61, 207,565.88 and 38,542.53 is: 57,815.31
Step by Step Solution
- Step 1: Write the proportion equation
138,373.61 : 207,565.88 = 38,542.53 : x - Step 2: Convert to fraction form
138,373.61/207,565.88 = 38,542.53/x - Step 3: Cross multiply
138,373.61x = 207,565.88 × 38,542.53 - Step 4: Simplify right side
138,373.61x = 8,000,113,119.05 - Step 5: Solve for x
x = 8,000,113,119.05/138,373.61 - Step 6: Final answer
x = 57,815.31
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.