Home / 87,630.70-131,446.05-86,853.10

Finding the Fourth Proportional to 87,630.70, 131,446.05 and 86,853.10

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Solution

The fourth proportional to 87,630.70, 131,446.05 and 86,853.10 is: 130,279.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,630.70 : 131,446.05 = 86,853.10 : x
  2. Step 2: Convert to fraction form
    87,630.70/131,446.05 = 86,853.10/x
  3. Step 3: Cross multiply
    87,630.70x = 131,446.05 × 86,853.10
  4. Step 4: Simplify right side
    87,630.70x = 11,416,496,925.26
  5. Step 5: Solve for x
    x = 11,416,496,925.26/87,630.70
  6. Step 6: Final answer
    x = 130,279.65

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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.