Home / 83,420.06-124,839.23-68,251.89

Finding the Fourth Proportional to 83,420.06, 124,839.23 and 68,251.89

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Solution

The fourth proportional to 83,420.06, 124,839.23 and 68,251.89 is: 102,139.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,420.06 : 124,839.23 = 68,251.89 : x
  2. Step 2: Convert to fraction form
    83,420.06/124,839.23 = 68,251.89/x
  3. Step 3: Cross multiply
    83,420.06x = 124,839.23 × 68,251.89
  4. Step 4: Simplify right side
    83,420.06x = 8,520,513,052.39
  5. Step 5: Solve for x
    x = 8,520,513,052.39/83,420.06
  6. Step 6: Final answer
    x = 102,139.85

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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.