Home / 87,370.60-131,153.10-54,128.20

Finding the Fourth Proportional to 87,370.60, 131,153.10 and 54,128.20

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Solution

The fourth proportional to 87,370.60, 131,153.10 and 54,128.20 is: 81,252.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,370.60 : 131,153.10 = 54,128.20 : x
  2. Step 2: Convert to fraction form
    87,370.60/131,153.10 = 54,128.20/x
  3. Step 3: Cross multiply
    87,370.60x = 131,153.10 × 54,128.20
  4. Step 4: Simplify right side
    87,370.60x = 7,099,081,227.42
  5. Step 5: Solve for x
    x = 7,099,081,227.42/87,370.60
  6. Step 6: Final answer
    x = 81,252.52

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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.