Finding the Fourth Proportional to 138,644.74, 207,967.16 and 38,819.66
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Solution
The fourth proportional to 138,644.74, 207,967.16 and 38,819.66 is: 58,229.50
Step by Step Solution
- Step 1: Write the proportion equation
138,644.74 : 207,967.16 = 38,819.66 : x - Step 2: Convert to fraction form
138,644.74/207,967.16 = 38,819.66/x - Step 3: Cross multiply
138,644.74x = 207,967.16 × 38,819.66 - Step 4: Simplify right side
138,644.74x = 8,073,214,442.37 - Step 5: Solve for x
x = 8,073,214,442.37/138,644.74 - Step 6: Final answer
x = 58,229.50
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1.5x scale
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.