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Finding the Fourth Proportional to 159.62, 220.23 and 93.22

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Solution

The fourth proportional to 159.62, 220.23 and 93.22 is: 128.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.62 : 220.23 = 93.22 : x
  2. Step 2: Convert to fraction form
    159.62/220.23 = 93.22/x
  3. Step 3: Cross multiply
    159.62x = 220.23 × 93.22
  4. Step 4: Simplify right side
    159.62x = 20,529.29
  5. Step 5: Solve for x
    x = 20,529.29/159.62
  6. Step 6: Final answer
    x = 128.62

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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.