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Finding the Fourth Proportional to 87,814.80, 131,722.20 and 73,234.80

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Solution

The fourth proportional to 87,814.80, 131,722.20 and 73,234.80 is: 109,852.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,814.80 : 131,722.20 = 73,234.80 : x
  2. Step 2: Convert to fraction form
    87,814.80/131,722.20 = 73,234.80/x
  3. Step 3: Cross multiply
    87,814.80x = 131,722.20 × 73,234.80
  4. Step 4: Simplify right side
    87,814.80x = 9,646,648,972.56
  5. Step 5: Solve for x
    x = 9,646,648,972.56/87,814.80
  6. Step 6: Final answer
    x = 109,852.20

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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.