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Finding the Fourth Proportional to 144,134.87, 198,897.77 and 80,476.70

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Solution

The fourth proportional to 144,134.87, 198,897.77 and 80,476.70 is: 111,053.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,134.87 : 198,897.77 = 80,476.70 : x
  2. Step 2: Convert to fraction form
    144,134.87/198,897.77 = 80,476.70/x
  3. Step 3: Cross multiply
    144,134.87x = 198,897.77 × 80,476.70
  4. Step 4: Simplify right side
    144,134.87x = 16,006,635,764.58
  5. Step 5: Solve for x
    x = 16,006,635,764.58/144,134.87
  6. Step 6: Final answer
    x = 111,053.18

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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.