Home / 87,926.80-131,890.20-82,742.80

Finding the Fourth Proportional to 87,926.80, 131,890.20 and 82,742.80

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Solution

The fourth proportional to 87,926.80, 131,890.20 and 82,742.80 is: 124,114.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,926.80 : 131,890.20 = 82,742.80 : x
  2. Step 2: Convert to fraction form
    87,926.80/131,890.20 = 82,742.80/x
  3. Step 3: Cross multiply
    87,926.80x = 131,890.20 × 82,742.80
  4. Step 4: Simplify right side
    87,926.80x = 10,912,964,440.56
  5. Step 5: Solve for x
    x = 10,912,964,440.56/87,926.80
  6. Step 6: Final answer
    x = 124,114.20

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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.