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Finding the Fourth Proportional to 136,863.79, 205,295.68 and 52,663.61

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Solution

The fourth proportional to 136,863.79, 205,295.68 and 52,663.61 is: 78,995.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,863.79 : 205,295.68 = 52,663.61 : x
  2. Step 2: Convert to fraction form
    136,863.79/205,295.68 = 52,663.61/x
  3. Step 3: Cross multiply
    136,863.79x = 205,295.68 × 52,663.61
  4. Step 4: Simplify right side
    136,863.79x = 10,811,612,205.27
  5. Step 5: Solve for x
    x = 10,811,612,205.27/136,863.79
  6. Step 6: Final answer
    x = 78,995.42

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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.