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Finding the Fourth Proportional to 181.66, 271.94 and 136.20

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Solution

The fourth proportional to 181.66, 271.94 and 136.20 is: 203.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.66 : 271.94 = 136.20 : x
  2. Step 2: Convert to fraction form
    181.66/271.94 = 136.20/x
  3. Step 3: Cross multiply
    181.66x = 271.94 × 136.20
  4. Step 4: Simplify right side
    181.66x = 37,038.23
  5. Step 5: Solve for x
    x = 37,038.23/181.66
  6. Step 6: Final answer
    x = 203.89

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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.