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Finding the Fourth Proportional to 148,009.44, 204,248.88 and 80,940

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Solution

The fourth proportional to 148,009.44, 204,248.88 and 80,940 is: 111,694.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,009.44 : 204,248.88 = 80,940 : x
  2. Step 2: Convert to fraction form
    148,009.44/204,248.88 = 80,940/x
  3. Step 3: Cross multiply
    148,009.44x = 204,248.88 × 80,940
  4. Step 4: Simplify right side
    148,009.44x = 16,531,904,347.20
  5. Step 5: Solve for x
    x = 16,531,904,347.20/148,009.44
  6. Step 6: Final answer
    x = 111,694.93

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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.