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Finding the Fourth Proportional to 181.08, 249.85 and 111.14

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Solution

The fourth proportional to 181.08, 249.85 and 111.14 is: 153.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.08 : 249.85 = 111.14 : x
  2. Step 2: Convert to fraction form
    181.08/249.85 = 111.14/x
  3. Step 3: Cross multiply
    181.08x = 249.85 × 111.14
  4. Step 4: Simplify right side
    181.08x = 27,768.68
  5. Step 5: Solve for x
    x = 27,768.68/181.08
  6. Step 6: Final answer
    x = 153.35

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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.