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Finding the Fourth Proportional to 159.59, 220.14 and 118.25

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Solution

The fourth proportional to 159.59, 220.14 and 118.25 is: 163.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.59 : 220.14 = 118.25 : x
  2. Step 2: Convert to fraction form
    159.59/220.14 = 118.25/x
  3. Step 3: Cross multiply
    159.59x = 220.14 × 118.25
  4. Step 4: Simplify right side
    159.59x = 26,031.56
  5. Step 5: Solve for x
    x = 26,031.56/159.59
  6. Step 6: Final answer
    x = 163.12

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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.