Home / 99,480.62-137,333.97-76,768.58

Finding the Fourth Proportional to 99,480.62, 137,333.97 and 76,768.58

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Solution

The fourth proportional to 99,480.62, 137,333.97 and 76,768.58 is: 105,979.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,480.62 : 137,333.97 = 76,768.58 : x
  2. Step 2: Convert to fraction form
    99,480.62/137,333.97 = 76,768.58/x
  3. Step 3: Cross multiply
    99,480.62x = 137,333.97 × 76,768.58
  4. Step 4: Simplify right side
    99,480.62x = 10,542,933,862.66
  5. Step 5: Solve for x
    x = 10,542,933,862.66/99,480.62
  6. Step 6: Final answer
    x = 105,979.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.