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Finding the Fourth Proportional to 181.20, 272.05 and 94.59

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Solution

The fourth proportional to 181.20, 272.05 and 94.59 is: 142.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.20 : 272.05 = 94.59 : x
  2. Step 2: Convert to fraction form
    181.20/272.05 = 94.59/x
  3. Step 3: Cross multiply
    181.20x = 272.05 × 94.59
  4. Step 4: Simplify right side
    181.20x = 25,733.21
  5. Step 5: Solve for x
    x = 25,733.21/181.20
  6. Step 6: Final answer
    x = 142.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.