Home / 83,921.40-125,882.10-80,695.80

Finding the Fourth Proportional to 83,921.40, 125,882.10 and 80,695.80

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Solution

The fourth proportional to 83,921.40, 125,882.10 and 80,695.80 is: 121,043.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,921.40 : 125,882.10 = 80,695.80 : x
  2. Step 2: Convert to fraction form
    83,921.40/125,882.10 = 80,695.80/x
  3. Step 3: Cross multiply
    83,921.40x = 125,882.10 × 80,695.80
  4. Step 4: Simplify right side
    83,921.40x = 10,158,156,765.18
  5. Step 5: Solve for x
    x = 10,158,156,765.18/83,921.40
  6. Step 6: Final answer
    x = 121,043.70

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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.