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Finding the Fourth Proportional to 144,772.44, 199,789.92 and 81,108.88

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Solution

The fourth proportional to 144,772.44, 199,789.92 and 81,108.88 is: 111,932.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,772.44 : 199,789.92 = 81,108.88 : x
  2. Step 2: Convert to fraction form
    144,772.44/199,789.92 = 81,108.88/x
  3. Step 3: Cross multiply
    144,772.44x = 199,789.92 × 81,108.88
  4. Step 4: Simplify right side
    144,772.44x = 16,204,736,646.49
  5. Step 5: Solve for x
    x = 16,204,736,646.49/144,772.44
  6. Step 6: Final answer
    x = 111,932.47

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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.