Home / 99,902.20-137,865.14-54,580.94

Finding the Fourth Proportional to 99,902.20, 137,865.14 and 54,580.94

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Solution

The fourth proportional to 99,902.20, 137,865.14 and 54,580.94 is: 75,321.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,902.20 : 137,865.14 = 54,580.94 : x
  2. Step 2: Convert to fraction form
    99,902.20/137,865.14 = 54,580.94/x
  3. Step 3: Cross multiply
    99,902.20x = 137,865.14 × 54,580.94
  4. Step 4: Simplify right side
    99,902.20x = 7,524,807,972.20
  5. Step 5: Solve for x
    x = 7,524,807,972.20/99,902.20
  6. Step 6: Final answer
    x = 75,321.75

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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.