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Finding the Fourth Proportional to 181.58, 250.12 and 129.04

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Solution

The fourth proportional to 181.58, 250.12 and 129.04 is: 177.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.58 : 250.12 = 129.04 : x
  2. Step 2: Convert to fraction form
    181.58/250.12 = 129.04/x
  3. Step 3: Cross multiply
    181.58x = 250.12 × 129.04
  4. Step 4: Simplify right side
    181.58x = 32,275.48
  5. Step 5: Solve for x
    x = 32,275.48/181.58
  6. Step 6: Final answer
    x = 177.75

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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.