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Finding the Fourth Proportional to 136.98, 187.11 and 136.08

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Solution

The fourth proportional to 136.98, 187.11 and 136.08 is: 185.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.98 : 187.11 = 136.08 : x
  2. Step 2: Convert to fraction form
    136.98/187.11 = 136.08/x
  3. Step 3: Cross multiply
    136.98x = 187.11 × 136.08
  4. Step 4: Simplify right side
    136.98x = 25,461.93
  5. Step 5: Solve for x
    x = 25,461.93/136.98
  6. Step 6: Final answer
    x = 185.88

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.