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Finding the Fourth Proportional to 148,373.75, 204,755.78 and 81,305.75

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Solution

The fourth proportional to 148,373.75, 204,755.78 and 81,305.75 is: 112,201.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,373.75 : 204,755.78 = 81,305.75 : x
  2. Step 2: Convert to fraction form
    148,373.75/204,755.78 = 81,305.75/x
  3. Step 3: Cross multiply
    148,373.75x = 204,755.78 × 81,305.75
  4. Step 4: Simplify right side
    148,373.75x = 16,647,822,259.74
  5. Step 5: Solve for x
    x = 16,647,822,259.74/148,373.75
  6. Step 6: Final answer
    x = 112,201.94

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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.