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Finding the Fourth Proportional to 136,745.18, 204,443.42 and 115,917.64

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Solution

The fourth proportional to 136,745.18, 204,443.42 and 115,917.64 is: 173,304.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,745.18 : 204,443.42 = 115,917.64 : x
  2. Step 2: Convert to fraction form
    136,745.18/204,443.42 = 115,917.64/x
  3. Step 3: Cross multiply
    136,745.18x = 204,443.42 × 115,917.64
  4. Step 4: Simplify right side
    136,745.18x = 23,698,598,759.93
  5. Step 5: Solve for x
    x = 23,698,598,759.93/136,745.18
  6. Step 6: Final answer
    x = 173,304.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.