Home / 99,872.10-137,824.62-54,551.43

Finding the Fourth Proportional to 99,872.10, 137,824.62 and 54,551.43

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Solution

The fourth proportional to 99,872.10, 137,824.62 and 54,551.43 is: 75,281.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,872.10 : 137,824.62 = 54,551.43 : x
  2. Step 2: Convert to fraction form
    99,872.10/137,824.62 = 54,551.43/x
  3. Step 3: Cross multiply
    99,872.10x = 137,824.62 × 54,551.43
  4. Step 4: Simplify right side
    99,872.10x = 7,518,530,110.21
  5. Step 5: Solve for x
    x = 7,518,530,110.21/99,872.10
  6. Step 6: Final answer
    x = 75,281.59

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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.