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Finding the Fourth Proportional to 144,375.86, 199,239.13 and 80,713.66

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Solution

The fourth proportional to 144,375.86, 199,239.13 and 80,713.66 is: 111,385.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,375.86 : 199,239.13 = 80,713.66 : x
  2. Step 2: Convert to fraction form
    144,375.86/199,239.13 = 80,713.66/x
  3. Step 3: Cross multiply
    144,375.86x = 199,239.13 × 80,713.66
  4. Step 4: Simplify right side
    144,375.86x = 16,081,319,397.52
  5. Step 5: Solve for x
    x = 16,081,319,397.52/144,375.86
  6. Step 6: Final answer
    x = 111,385.10

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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.