Home / 99,760.97-137,665.85-54,437.82

Finding the Fourth Proportional to 99,760.97, 137,665.85 and 54,437.82

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Solution

The fourth proportional to 99,760.97, 137,665.85 and 54,437.82 is: 75,121.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,760.97 : 137,665.85 = 54,437.82 : x
  2. Step 2: Convert to fraction form
    99,760.97/137,665.85 = 54,437.82/x
  3. Step 3: Cross multiply
    99,760.97x = 137,665.85 × 54,437.82
  4. Step 4: Simplify right side
    99,760.97x = 7,494,228,490.26
  5. Step 5: Solve for x
    x = 7,494,228,490.26/99,760.97
  6. Step 6: Final answer
    x = 75,121.85

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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.