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Finding the Fourth Proportional to 83,359.29, 125,309.88 and 66,899.68

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Solution

The fourth proportional to 83,359.29, 125,309.88 and 66,899.68 is: 100,566.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,359.29 : 125,309.88 = 66,899.68 : x
  2. Step 2: Convert to fraction form
    83,359.29/125,309.88 = 66,899.68/x
  3. Step 3: Cross multiply
    83,359.29x = 125,309.88 × 66,899.68
  4. Step 4: Simplify right side
    83,359.29x = 8,383,190,872.84
  5. Step 5: Solve for x
    x = 8,383,190,872.84/83,359.29
  6. Step 6: Final answer
    x = 100,566.97

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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.