Finding the Fourth Proportional to 100,182.29, 138,251.55 and 55,470.29
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Solution
The fourth proportional to 100,182.29, 138,251.55 and 55,470.29 is: 76,548.99
Step by Step Solution
- Step 1: Write the proportion equation
100,182.29 : 138,251.55 = 55,470.29 : x - Step 2: Convert to fraction form
100,182.29/138,251.55 = 55,470.29/x - Step 3: Cross multiply
100,182.29x = 138,251.55 × 55,470.29 - Step 4: Simplify right side
100,182.29x = 7,668,852,880.19 - Step 5: Solve for x
x = 7,668,852,880.19/100,182.29 - Step 6: Final answer
x = 76,548.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.