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Finding the Fourth Proportional to 159.49, 220.13 and 94.03

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Solution

The fourth proportional to 159.49, 220.13 and 94.03 is: 129.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.49 : 220.13 = 94.03 : x
  2. Step 2: Convert to fraction form
    159.49/220.13 = 94.03/x
  3. Step 3: Cross multiply
    159.49x = 220.13 × 94.03
  4. Step 4: Simplify right side
    159.49x = 20,699.92
  5. Step 5: Solve for x
    x = 20,699.92/159.49
  6. Step 6: Final answer
    x = 129.79

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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.