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Finding the Fourth Proportional to 136,418.92, 204,628.78 and 47,672.44

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Solution

The fourth proportional to 136,418.92, 204,628.78 and 47,672.44 is: 71,508.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,418.92 : 204,628.78 = 47,672.44 : x
  2. Step 2: Convert to fraction form
    136,418.92/204,628.78 = 47,672.44/x
  3. Step 3: Cross multiply
    136,418.92x = 204,628.78 × 47,672.44
  4. Step 4: Simplify right side
    136,418.92x = 9,755,153,236.82
  5. Step 5: Solve for x
    x = 9,755,153,236.82/136,418.92
  6. Step 6: Final answer
    x = 71,508.80

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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.