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Finding the Fourth Proportional to 144,042.64, 198,778.84 and 79,511.88

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Solution

The fourth proportional to 144,042.64, 198,778.84 and 79,511.88 is: 109,726.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,042.64 : 198,778.84 = 79,511.88 : x
  2. Step 2: Convert to fraction form
    144,042.64/198,778.84 = 79,511.88/x
  3. Step 3: Cross multiply
    144,042.64x = 198,778.84 × 79,511.88
  4. Step 4: Simplify right side
    144,042.64x = 15,805,279,272.62
  5. Step 5: Solve for x
    x = 15,805,279,272.62/144,042.64
  6. Step 6: Final answer
    x = 109,726.39

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1.5x scale

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.