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Finding the Fourth Proportional to 109,751.48, 151,468.26 and 79,149.86

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Solution

The fourth proportional to 109,751.48, 151,468.26 and 79,149.86 is: 109,234.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,751.48 : 151,468.26 = 79,149.86 : x
  2. Step 2: Convert to fraction form
    109,751.48/151,468.26 = 79,149.86/x
  3. Step 3: Cross multiply
    109,751.48x = 151,468.26 × 79,149.86
  4. Step 4: Simplify right side
    109,751.48x = 11,988,691,573.44
  5. Step 5: Solve for x
    x = 11,988,691,573.44/109,751.48
  6. Step 6: Final answer
    x = 109,234.90

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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.