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Finding the Fourth Proportional to 136.84, 204.87 and 122.96

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Solution

The fourth proportional to 136.84, 204.87 and 122.96 is: 184.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.84 : 204.87 = 122.96 : x
  2. Step 2: Convert to fraction form
    136.84/204.87 = 122.96/x
  3. Step 3: Cross multiply
    136.84x = 204.87 × 122.96
  4. Step 4: Simplify right side
    136.84x = 25,190.82
  5. Step 5: Solve for x
    x = 25,190.82/136.84
  6. Step 6: Final answer
    x = 184.09

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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.