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Finding the Fourth Proportional to 148,077.44, 204,348.48 and 81,008

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Solution

The fourth proportional to 148,077.44, 204,348.48 and 81,008 is: 111,791.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,077.44 : 204,348.48 = 81,008 : x
  2. Step 2: Convert to fraction form
    148,077.44/204,348.48 = 81,008/x
  3. Step 3: Cross multiply
    148,077.44x = 204,348.48 × 81,008
  4. Step 4: Simplify right side
    148,077.44x = 16,553,861,667.84
  5. Step 5: Solve for x
    x = 16,553,861,667.84/148,077.44
  6. Step 6: Final answer
    x = 111,791.92

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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.