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Finding the Fourth Proportional to 136.01, 187.73 and 80.73

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Solution

The fourth proportional to 136.01, 187.73 and 80.73 is: 111.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.01 : 187.73 = 80.73 : x
  2. Step 2: Convert to fraction form
    136.01/187.73 = 80.73/x
  3. Step 3: Cross multiply
    136.01x = 187.73 × 80.73
  4. Step 4: Simplify right side
    136.01x = 15,155.44
  5. Step 5: Solve for x
    x = 15,155.44/136.01
  6. Step 6: Final answer
    x = 111.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.