Home / 87,354.20-131,031.30-86,576.60

Finding the Fourth Proportional to 87,354.20, 131,031.30 and 86,576.60

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Solution

The fourth proportional to 87,354.20, 131,031.30 and 86,576.60 is: 129,864.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,354.20 : 131,031.30 = 86,576.60 : x
  2. Step 2: Convert to fraction form
    87,354.20/131,031.30 = 86,576.60/x
  3. Step 3: Cross multiply
    87,354.20x = 131,031.30 × 86,576.60
  4. Step 4: Simplify right side
    87,354.20x = 11,344,244,447.58
  5. Step 5: Solve for x
    x = 11,344,244,447.58/87,354.20
  6. Step 6: Final answer
    x = 129,864.90

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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.