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Finding the Fourth Proportional to 136.86, 188.84 and 101.97

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Solution

The fourth proportional to 136.86, 188.84 and 101.97 is: 140.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.86 : 188.84 = 101.97 : x
  2. Step 2: Convert to fraction form
    136.86/188.84 = 101.97/x
  3. Step 3: Cross multiply
    136.86x = 188.84 × 101.97
  4. Step 4: Simplify right side
    136.86x = 19,255.50
  5. Step 5: Solve for x
    x = 19,255.50/136.86
  6. Step 6: Final answer
    x = 140.69

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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.