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Finding the Fourth Proportional to 181.28, 250.14 and 103.68

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Solution

The fourth proportional to 181.28, 250.14 and 103.68 is: 143.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.28 : 250.14 = 103.68 : x
  2. Step 2: Convert to fraction form
    181.28/250.14 = 103.68/x
  3. Step 3: Cross multiply
    181.28x = 250.14 × 103.68
  4. Step 4: Simplify right side
    181.28x = 25,934.52
  5. Step 5: Solve for x
    x = 25,934.52/181.28
  6. Step 6: Final answer
    x = 143.06

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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.