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Finding the Fourth Proportional to 136.76, 188.86 and 116.97

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Solution

The fourth proportional to 136.76, 188.86 and 116.97 is: 161.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.76 : 188.86 = 116.97 : x
  2. Step 2: Convert to fraction form
    136.76/188.86 = 116.97/x
  3. Step 3: Cross multiply
    136.76x = 188.86 × 116.97
  4. Step 4: Simplify right side
    136.76x = 22,090.37
  5. Step 5: Solve for x
    x = 22,090.37/136.76
  6. Step 6: Final answer
    x = 161.53

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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.