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Finding the Fourth Proportional to 179,872.30, 269,905.65 and 80,047.90

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Solution

The fourth proportional to 179,872.30, 269,905.65 and 80,047.90 is: 120,115.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,872.30 : 269,905.65 = 80,047.90 : x
  2. Step 2: Convert to fraction form
    179,872.30/269,905.65 = 80,047.90/x
  3. Step 3: Cross multiply
    179,872.30x = 269,905.65 × 80,047.90
  4. Step 4: Simplify right side
    179,872.30x = 21,605,380,480.64
  5. Step 5: Solve for x
    x = 21,605,380,480.64/179,872.30
  6. Step 6: Final answer
    x = 120,115.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.