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Finding the Fourth Proportional to 136,893.84, 204,841.18 and 80,760.84

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Solution

The fourth proportional to 136,893.84, 204,841.18 and 80,760.84 is: 120,846.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,893.84 : 204,841.18 = 80,760.84 : x
  2. Step 2: Convert to fraction form
    136,893.84/204,841.18 = 80,760.84/x
  3. Step 3: Cross multiply
    136,893.84x = 204,841.18 × 80,760.84
  4. Step 4: Simplify right side
    136,893.84x = 16,543,145,763.39
  5. Step 5: Solve for x
    x = 16,543,145,763.39/136,893.84
  6. Step 6: Final answer
    x = 120,846.53

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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.