Home / 87,336,043.40-131,004,065.10-85,635,432.20

Finding the Fourth Proportional to 87,336,043.40, 131,004,065.10 and 85,635,432.20

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Solution

The fourth proportional to 87,336,043.40, 131,004,065.10 and 85,635,432.20 is: 128,453,148.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,336,043.40 : 131,004,065.10 = 85,635,432.20 : x
  2. Step 2: Convert to fraction form
    87,336,043.40/131,004,065.10 = 85,635,432.20/x
  3. Step 3: Cross multiply
    87,336,043.40x = 131,004,065.10 × 85,635,432.20
  4. Step 4: Simplify right side
    87,336,043.40x = 11,218,589,734,795,436
  5. Step 5: Solve for x
    x = 11,218,589,734,795,436/87,336,043.40
  6. Step 6: Final answer
    x = 128,453,148.30

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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.