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Finding the Fourth Proportional to 159.17, 219.68 and 93.68

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Solution

The fourth proportional to 159.17, 219.68 and 93.68 is: 129.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.17 : 219.68 = 93.68 : x
  2. Step 2: Convert to fraction form
    159.17/219.68 = 93.68/x
  3. Step 3: Cross multiply
    159.17x = 219.68 × 93.68
  4. Step 4: Simplify right side
    159.17x = 20,578.06
  5. Step 5: Solve for x
    x = 20,578.06/159.17
  6. Step 6: Final answer
    x = 129.29

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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.