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Finding the Fourth Proportional to 148,654.52, 205,143.36 and 80,671.49

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Solution

The fourth proportional to 148,654.52, 205,143.36 and 80,671.49 is: 111,326.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,654.52 : 205,143.36 = 80,671.49 : x
  2. Step 2: Convert to fraction form
    148,654.52/205,143.36 = 80,671.49/x
  3. Step 3: Cross multiply
    148,654.52x = 205,143.36 × 80,671.49
  4. Step 4: Simplify right side
    148,654.52x = 16,549,219,489.09
  5. Step 5: Solve for x
    x = 16,549,219,489.09/148,654.52
  6. Step 6: Final answer
    x = 111,326.72

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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.