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Finding the Fourth Proportional to 181.11, 249.96 and 107.47

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Solution

The fourth proportional to 181.11, 249.96 and 107.47 is: 148.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.11 : 249.96 = 107.47 : x
  2. Step 2: Convert to fraction form
    181.11/249.96 = 107.47/x
  3. Step 3: Cross multiply
    181.11x = 249.96 × 107.47
  4. Step 4: Simplify right side
    181.11x = 26,862.98
  5. Step 5: Solve for x
    x = 26,862.98/181.11
  6. Step 6: Final answer
    x = 148.32

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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.