Home / 87,328.60-131,151.30-76,442.20

Finding the Fourth Proportional to 87,328.60, 131,151.30 and 76,442.20

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Solution

The fourth proportional to 87,328.60, 131,151.30 and 76,442.20 is: 114,801.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,328.60 : 131,151.30 = 76,442.20 : x
  2. Step 2: Convert to fraction form
    87,328.60/131,151.30 = 76,442.20/x
  3. Step 3: Cross multiply
    87,328.60x = 131,151.30 × 76,442.20
  4. Step 4: Simplify right side
    87,328.60x = 10,025,493,904.86
  5. Step 5: Solve for x
    x = 10,025,493,904.86/87,328.60
  6. Step 6: Final answer
    x = 114,801.95

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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.