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Finding the Fourth Proportional to 136,893.34, 204,840.44 and 80,760.34

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Solution

The fourth proportional to 136,893.34, 204,840.44 and 80,760.34 is: 120,845.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,893.34 : 204,840.44 = 80,760.34 : x
  2. Step 2: Convert to fraction form
    136,893.34/204,840.44 = 80,760.34/x
  3. Step 3: Cross multiply
    136,893.34x = 204,840.44 × 80,760.34
  4. Step 4: Simplify right side
    136,893.34x = 16,542,982,152.15
  5. Step 5: Solve for x
    x = 16,542,982,152.15/136,893.34
  6. Step 6: Final answer
    x = 120,845.78

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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.