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Finding the Fourth Proportional to 83,694.20, 125,541.30 and 82,819.40

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Solution

The fourth proportional to 83,694.20, 125,541.30 and 82,819.40 is: 124,229.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,694.20 : 125,541.30 = 82,819.40 : x
  2. Step 2: Convert to fraction form
    83,694.20/125,541.30 = 82,819.40/x
  3. Step 3: Cross multiply
    83,694.20x = 125,541.30 × 82,819.40
  4. Step 4: Simplify right side
    83,694.20x = 10,397,255,141.22
  5. Step 5: Solve for x
    x = 10,397,255,141.22/83,694.20
  6. Step 6: Final answer
    x = 124,229.10

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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.