Home / 87,633.10-131,449.65-87,114.70

Finding the Fourth Proportional to 87,633.10, 131,449.65 and 87,114.70

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Solution

The fourth proportional to 87,633.10, 131,449.65 and 87,114.70 is: 130,672.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,633.10 : 131,449.65 = 87,114.70 : x
  2. Step 2: Convert to fraction form
    87,633.10/131,449.65 = 87,114.70/x
  3. Step 3: Cross multiply
    87,633.10x = 131,449.65 × 87,114.70
  4. Step 4: Simplify right side
    87,633.10x = 11,451,196,824.86
  5. Step 5: Solve for x
    x = 11,451,196,824.86/87,633.10
  6. Step 6: Final answer
    x = 130,672.05

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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.