Home / 87,387.60-131,178.60-54,145.20

Finding the Fourth Proportional to 87,387.60, 131,178.60 and 54,145.20

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Solution

The fourth proportional to 87,387.60, 131,178.60 and 54,145.20 is: 81,278.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,387.60 : 131,178.60 = 54,145.20 : x
  2. Step 2: Convert to fraction form
    87,387.60/131,178.60 = 54,145.20/x
  3. Step 3: Cross multiply
    87,387.60x = 131,178.60 × 54,145.20
  4. Step 4: Simplify right side
    87,387.60x = 7,102,691,532.72
  5. Step 5: Solve for x
    x = 7,102,691,532.72/87,387.60
  6. Step 6: Final answer
    x = 81,278.02

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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.