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Finding the Fourth Proportional to 181.34, 272.06 and 135.78

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Solution

The fourth proportional to 181.34, 272.06 and 135.78 is: 203.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.34 : 272.06 = 135.78 : x
  2. Step 2: Convert to fraction form
    181.34/272.06 = 135.78/x
  3. Step 3: Cross multiply
    181.34x = 272.06 × 135.78
  4. Step 4: Simplify right side
    181.34x = 36,939.12
  5. Step 5: Solve for x
    x = 36,939.12/181.34
  6. Step 6: Final answer
    x = 203.70

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