Home / 83,256.12-124,972.20-81,375.84

Finding the Fourth Proportional to 83,256.12, 124,972.20 and 81,375.84

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Solution

The fourth proportional to 83,256.12, 124,972.20 and 81,375.84 is: 122,149.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,256.12 : 124,972.20 = 81,375.84 : x
  2. Step 2: Convert to fraction form
    83,256.12/124,972.20 = 81,375.84/x
  3. Step 3: Cross multiply
    83,256.12x = 124,972.20 × 81,375.84
  4. Step 4: Simplify right side
    83,256.12x = 10,169,717,751.65
  5. Step 5: Solve for x
    x = 10,169,717,751.65/83,256.12
  6. Step 6: Final answer
    x = 122,149.79

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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.