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Finding the Fourth Proportional to 136.38, 203.05 and 134.46

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Solution

The fourth proportional to 136.38, 203.05 and 134.46 is: 200.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.38 : 203.05 = 134.46 : x
  2. Step 2: Convert to fraction form
    136.38/203.05 = 134.46/x
  3. Step 3: Cross multiply
    136.38x = 203.05 × 134.46
  4. Step 4: Simplify right side
    136.38x = 27,302.61
  5. Step 5: Solve for x
    x = 27,302.61/136.38
  6. Step 6: Final answer
    x = 200.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.