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Finding the Fourth Proportional to 136,789.44, 188,773.92 and 79,424.32

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Solution

The fourth proportional to 136,789.44, 188,773.92 and 79,424.32 is: 109,608.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,789.44 : 188,773.92 = 79,424.32 : x
  2. Step 2: Convert to fraction form
    136,789.44/188,773.92 = 79,424.32/x
  3. Step 3: Cross multiply
    136,789.44x = 188,773.92 × 79,424.32
  4. Step 4: Simplify right side
    136,789.44x = 14,993,240,229.73
  5. Step 5: Solve for x
    x = 14,993,240,229.73/136,789.44
  6. Step 6: Final answer
    x = 109,608.17

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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.