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Finding the Fourth Proportional to 136.68, 203.52 and 134.74

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Solution

The fourth proportional to 136.68, 203.52 and 134.74 is: 200.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.68 : 203.52 = 134.74 : x
  2. Step 2: Convert to fraction form
    136.68/203.52 = 134.74/x
  3. Step 3: Cross multiply
    136.68x = 203.52 × 134.74
  4. Step 4: Simplify right side
    136.68x = 27,422.28
  5. Step 5: Solve for x
    x = 27,422.28/136.68
  6. Step 6: Final answer
    x = 200.63

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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.