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Finding the Fourth Proportional to 147,859.13, 204,045.59 and 80,791.13

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Solution

The fourth proportional to 147,859.13, 204,045.59 and 80,791.13 is: 111,491.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,859.13 : 204,045.59 = 80,791.13 : x
  2. Step 2: Convert to fraction form
    147,859.13/204,045.59 = 80,791.13/x
  3. Step 3: Cross multiply
    147,859.13x = 204,045.59 × 80,791.13
  4. Step 4: Simplify right side
    147,859.13x = 16,485,073,787.62
  5. Step 5: Solve for x
    x = 16,485,073,787.62/147,859.13
  6. Step 6: Final answer
    x = 111,491.75

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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.