Home / 82,766.80-124,150.20-76,861.90

Finding the Fourth Proportional to 82,766.80, 124,150.20 and 76,861.90

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Solution

The fourth proportional to 82,766.80, 124,150.20 and 76,861.90 is: 115,292.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,766.80 : 124,150.20 = 76,861.90 : x
  2. Step 2: Convert to fraction form
    82,766.80/124,150.20 = 76,861.90/x
  3. Step 3: Cross multiply
    82,766.80x = 124,150.20 × 76,861.90
  4. Step 4: Simplify right side
    82,766.80x = 9,542,420,257.38
  5. Step 5: Solve for x
    x = 9,542,420,257.38/82,766.80
  6. Step 6: Final answer
    x = 115,292.85

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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.