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Finding the Fourth Proportional to 181.76, 251.11 and 119.56

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Solution

The fourth proportional to 181.76, 251.11 and 119.56 is: 165.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.76 : 251.11 = 119.56 : x
  2. Step 2: Convert to fraction form
    181.76/251.11 = 119.56/x
  3. Step 3: Cross multiply
    181.76x = 251.11 × 119.56
  4. Step 4: Simplify right side
    181.76x = 30,022.11
  5. Step 5: Solve for x
    x = 30,022.11/181.76
  6. Step 6: Final answer
    x = 165.18

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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.