Home / 87,349.20-131,023.80-77,672.40

Finding the Fourth Proportional to 87,349.20, 131,023.80 and 77,672.40

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Solution

The fourth proportional to 87,349.20, 131,023.80 and 77,672.40 is: 116,508.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,349.20 : 131,023.80 = 77,672.40 : x
  2. Step 2: Convert to fraction form
    87,349.20/131,023.80 = 77,672.40/x
  3. Step 3: Cross multiply
    87,349.20x = 131,023.80 × 77,672.40
  4. Step 4: Simplify right side
    87,349.20x = 10,176,933,003.12
  5. Step 5: Solve for x
    x = 10,176,933,003.12/87,349.20
  6. Step 6: Final answer
    x = 116,508.60

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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.