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Finding the Fourth Proportional to 179,791.80, 269,720.10 and 74,621.40

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Solution

The fourth proportional to 179,791.80, 269,720.10 and 74,621.40 is: 111,945.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,791.80 : 269,720.10 = 74,621.40 : x
  2. Step 2: Convert to fraction form
    179,791.80/269,720.10 = 74,621.40/x
  3. Step 3: Cross multiply
    179,791.80x = 269,720.10 × 74,621.40
  4. Step 4: Simplify right side
    179,791.80x = 20,126,891,470.14
  5. Step 5: Solve for x
    x = 20,126,891,470.14/179,791.80
  6. Step 6: Final answer
    x = 111,945.55

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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.