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Finding the Fourth Proportional to 136.79, 203.41 and 132.23

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Solution

The fourth proportional to 136.79, 203.41 and 132.23 is: 196.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.79 : 203.41 = 132.23 : x
  2. Step 2: Convert to fraction form
    136.79/203.41 = 132.23/x
  3. Step 3: Cross multiply
    136.79x = 203.41 × 132.23
  4. Step 4: Simplify right side
    136.79x = 26,897.58
  5. Step 5: Solve for x
    x = 26,897.58/136.79
  6. Step 6: Final answer
    x = 196.64

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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.