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Finding the Fourth Proportional to 144,305.88, 199,138.39 and 80,644.20

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Solution

The fourth proportional to 144,305.88, 199,138.39 and 80,644.20 is: 111,286.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,305.88 : 199,138.39 = 80,644.20 : x
  2. Step 2: Convert to fraction form
    144,305.88/199,138.39 = 80,644.20/x
  3. Step 3: Cross multiply
    144,305.88x = 199,138.39 × 80,644.20
  4. Step 4: Simplify right side
    144,305.88x = 16,059,356,150.84
  5. Step 5: Solve for x
    x = 16,059,356,150.84/144,305.88
  6. Step 6: Final answer
    x = 111,286.91

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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.