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Finding the Fourth Proportional to 126.82, 191.19 and 118.01

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Solution

The fourth proportional to 126.82, 191.19 and 118.01 is: 177.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.82 : 191.19 = 118.01 : x
  2. Step 2: Convert to fraction form
    126.82/191.19 = 118.01/x
  3. Step 3: Cross multiply
    126.82x = 191.19 × 118.01
  4. Step 4: Simplify right side
    126.82x = 22,562.33
  5. Step 5: Solve for x
    x = 22,562.33/126.82
  6. Step 6: Final answer
    x = 177.92

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.