Home / 99,974.92-137,965.05-54,652.90

Finding the Fourth Proportional to 99,974.92, 137,965.05 and 54,652.90

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Solution

The fourth proportional to 99,974.92, 137,965.05 and 54,652.90 is: 75,420.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,974.92 : 137,965.05 = 54,652.90 : x
  2. Step 2: Convert to fraction form
    99,974.92/137,965.05 = 54,652.90/x
  3. Step 3: Cross multiply
    99,974.92x = 137,965.05 × 54,652.90
  4. Step 4: Simplify right side
    99,974.92x = 7,540,190,081.15
  5. Step 5: Solve for x
    x = 7,540,190,081.15/99,974.92
  6. Step 6: Final answer
    x = 75,420.82

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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.