Home / 87,459.20-120,750.72-67,278.86

Finding the Fourth Proportional to 87,459.20, 120,750.72 and 67,278.86

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Solution

The fourth proportional to 87,459.20, 120,750.72 and 67,278.86 is: 92,888.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,459.20 : 120,750.72 = 67,278.86 : x
  2. Step 2: Convert to fraction form
    87,459.20/120,750.72 = 67,278.86/x
  3. Step 3: Cross multiply
    87,459.20x = 120,750.72 × 67,278.86
  4. Step 4: Simplify right side
    87,459.20x = 8,123,970,785.78
  5. Step 5: Solve for x
    x = 8,123,970,785.78/87,459.20
  6. Step 6: Final answer
    x = 92,888.69

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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.