Home / 87,222.60-131,028.30-83,680.20

Finding the Fourth Proportional to 87,222.60, 131,028.30 and 83,680.20

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Solution

The fourth proportional to 87,222.60, 131,028.30 and 83,680.20 is: 125,706.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,222.60 : 131,028.30 = 83,680.20 : x
  2. Step 2: Convert to fraction form
    87,222.60/131,028.30 = 83,680.20/x
  3. Step 3: Cross multiply
    87,222.60x = 131,028.30 × 83,680.20
  4. Step 4: Simplify right side
    87,222.60x = 10,964,474,349.66
  5. Step 5: Solve for x
    x = 10,964,474,349.66/87,222.60
  6. Step 6: Final answer
    x = 125,706.80

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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.