Finding the Fourth Proportional to 138,387.92, 207,582.08 and 38,548.40
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Solution
The fourth proportional to 138,387.92, 207,582.08 and 38,548.40 is: 57,822.65
Step by Step Solution
- Step 1: Write the proportion equation
138,387.92 : 207,582.08 = 38,548.40 : x - Step 2: Convert to fraction form
138,387.92/207,582.08 = 38,548.40/x - Step 3: Cross multiply
138,387.92x = 207,582.08 × 38,548.40 - Step 4: Simplify right side
138,387.92x = 8,001,955,822.02 - Step 5: Solve for x
x = 8,001,955,822.02/138,387.92 - Step 6: Final answer
x = 57,822.65
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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.