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Finding the Fourth Proportional to 151,879.12, 209,691.72 and 135,935.92

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Solution

The fourth proportional to 151,879.12, 209,691.72 and 135,935.92 is: 187,679.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,879.12 : 209,691.72 = 135,935.92 : x
  2. Step 2: Convert to fraction form
    151,879.12/209,691.72 = 135,935.92/x
  3. Step 3: Cross multiply
    151,879.12x = 209,691.72 × 135,935.92
  4. Step 4: Simplify right side
    151,879.12x = 28,504,636,874.58
  5. Step 5: Solve for x
    x = 28,504,636,874.58/151,879.12
  6. Step 6: Final answer
    x = 187,679.76

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1.5x scale

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.