Home / 87,919.20-131,630.40-68,425.20

Finding the Fourth Proportional to 87,919.20, 131,630.40 and 68,425.20

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Solution

The fourth proportional to 87,919.20, 131,630.40 and 68,425.20 is: 102,444.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,919.20 : 131,630.40 = 68,425.20 : x
  2. Step 2: Convert to fraction form
    87,919.20/131,630.40 = 68,425.20/x
  3. Step 3: Cross multiply
    87,919.20x = 131,630.40 × 68,425.20
  4. Step 4: Simplify right side
    87,919.20x = 9,006,836,446.08
  5. Step 5: Solve for x
    x = 9,006,836,446.08/87,919.20
  6. Step 6: Final answer
    x = 102,444.48

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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.