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Finding the Fourth Proportional to 159.18, 219.56 and 141.81

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Solution

The fourth proportional to 159.18, 219.56 and 141.81 is: 195.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.18 : 219.56 = 141.81 : x
  2. Step 2: Convert to fraction form
    159.18/219.56 = 141.81/x
  3. Step 3: Cross multiply
    159.18x = 219.56 × 141.81
  4. Step 4: Simplify right side
    159.18x = 31,135.80
  5. Step 5: Solve for x
    x = 31,135.80/159.18
  6. Step 6: Final answer
    x = 195.60

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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.