Finding the Fourth Proportional to 138,213.10, 207,319.65 and 44,728.30
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Solution
The fourth proportional to 138,213.10, 207,319.65 and 44,728.30 is: 67,092.45
Step by Step Solution
- Step 1: Write the proportion equation
138,213.10 : 207,319.65 = 44,728.30 : x - Step 2: Convert to fraction form
138,213.10/207,319.65 = 44,728.30/x - Step 3: Cross multiply
138,213.10x = 207,319.65 × 44,728.30 - Step 4: Simplify right side
138,213.10x = 9,273,055,501.10 - Step 5: Solve for x
x = 9,273,055,501.10/138,213.10 - Step 6: Final answer
x = 67,092.45
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Similar ratio
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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.