Home / 87,814.60-131,765.10-66,747.40

Finding the Fourth Proportional to 87,814.60, 131,765.10 and 66,747.40

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Solution

The fourth proportional to 87,814.60, 131,765.10 and 66,747.40 is: 100,153.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,814.60 : 131,765.10 = 66,747.40 : x
  2. Step 2: Convert to fraction form
    87,814.60/131,765.10 = 66,747.40/x
  3. Step 3: Cross multiply
    87,814.60x = 131,765.10 × 66,747.40
  4. Step 4: Simplify right side
    87,814.60x = 8,794,977,835.74
  5. Step 5: Solve for x
    x = 8,794,977,835.74/87,814.60
  6. Step 6: Final answer
    x = 100,153.94

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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.