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Finding the Fourth Proportional to 144.73, 199.82 and 129.16

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Solution

The fourth proportional to 144.73, 199.82 and 129.16 is: 178.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.73 : 199.82 = 129.16 : x
  2. Step 2: Convert to fraction form
    144.73/199.82 = 129.16/x
  3. Step 3: Cross multiply
    144.73x = 199.82 × 129.16
  4. Step 4: Simplify right side
    144.73x = 25,808.77
  5. Step 5: Solve for x
    x = 25,808.77/144.73
  6. Step 6: Final answer
    x = 178.32

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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.