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Finding the Fourth Proportional to 132,067.60, 198,115.80 and 127,920.40

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Solution

The fourth proportional to 132,067.60, 198,115.80 and 127,920.40 is: 191,894.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,067.60 : 198,115.80 = 127,920.40 : x
  2. Step 2: Convert to fraction form
    132,067.60/198,115.80 = 127,920.40/x
  3. Step 3: Cross multiply
    132,067.60x = 198,115.80 × 127,920.40
  4. Step 4: Simplify right side
    132,067.60x = 25,343,052,382.32
  5. Step 5: Solve for x
    x = 25,343,052,382.32/132,067.60
  6. Step 6: Final answer
    x = 191,894.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.