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Finding the Fourth Proportional to 99,134, 136,805.88 and 54,422.96

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Solution

The fourth proportional to 99,134, 136,805.88 and 54,422.96 is: 75,104.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,134 : 136,805.88 = 54,422.96 : x
  2. Step 2: Convert to fraction form
    99,134/136,805.88 = 54,422.96/x
  3. Step 3: Cross multiply
    99,134x = 136,805.88 × 54,422.96
  4. Step 4: Simplify right side
    99,134x = 7,445,380,935.00
  5. Step 5: Solve for x
    x = 7,445,380,935.00/99,134
  6. Step 6: Final answer
    x = 75,104.21

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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.