Finding the Fourth Proportional to 138,353.92, 207,139.20 and 107,549.44
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Solution
The fourth proportional to 138,353.92, 207,139.20 and 107,549.44 is: 161,019.69
Step by Step Solution
- Step 1: Write the proportion equation
138,353.92 : 207,139.20 = 107,549.44 : x - Step 2: Convert to fraction form
138,353.92/207,139.20 = 107,549.44/x - Step 3: Cross multiply
138,353.92x = 207,139.20 × 107,549.44 - Step 4: Simplify right side
138,353.92x = 22,277,704,962.05 - Step 5: Solve for x
x = 22,277,704,962.05/138,353.92 - Step 6: Final answer
x = 161,019.69
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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.