Home / 99,772.25-137,680.64-54,449.85

Finding the Fourth Proportional to 99,772.25, 137,680.64 and 54,449.85

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Solution

The fourth proportional to 99,772.25, 137,680.64 and 54,449.85 is: 75,138.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,772.25 : 137,680.64 = 54,449.85 : x
  2. Step 2: Convert to fraction form
    99,772.25/137,680.64 = 54,449.85/x
  3. Step 3: Cross multiply
    99,772.25x = 137,680.64 × 54,449.85
  4. Step 4: Simplify right side
    99,772.25x = 7,496,689,923.65
  5. Step 5: Solve for x
    x = 7,496,689,923.65/99,772.25
  6. Step 6: Final answer
    x = 75,138.03

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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.