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Finding the Fourth Proportional to 99,150.48, 136,829.52 and 54,438.48

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Solution

The fourth proportional to 99,150.48, 136,829.52 and 54,438.48 is: 75,126.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,150.48 : 136,829.52 = 54,438.48 : x
  2. Step 2: Convert to fraction form
    99,150.48/136,829.52 = 54,438.48/x
  3. Step 3: Cross multiply
    99,150.48x = 136,829.52 × 54,438.48
  4. Step 4: Simplify right side
    99,150.48x = 7,448,791,087.93
  5. Step 5: Solve for x
    x = 7,448,791,087.93/99,150.48
  6. Step 6: Final answer
    x = 75,126.12

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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.