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Finding the Fourth Proportional to 136,351.53, 204,458.85 and 79,443.86

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Solution

The fourth proportional to 136,351.53, 204,458.85 and 79,443.86 is: 119,125.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,351.53 : 204,458.85 = 79,443.86 : x
  2. Step 2: Convert to fraction form
    136,351.53/204,458.85 = 79,443.86/x
  3. Step 3: Cross multiply
    136,351.53x = 204,458.85 × 79,443.86
  4. Step 4: Simplify right side
    136,351.53x = 16,242,999,431.48
  5. Step 5: Solve for x
    x = 16,242,999,431.48/136,351.53
  6. Step 6: Final answer
    x = 119,125.91

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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.