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Finding the Fourth Proportional to 160.16, 220.96 and 93.76

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Solution

The fourth proportional to 160.16, 220.96 and 93.76 is: 129.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.16 : 220.96 = 93.76 : x
  2. Step 2: Convert to fraction form
    160.16/220.96 = 93.76/x
  3. Step 3: Cross multiply
    160.16x = 220.96 × 93.76
  4. Step 4: Simplify right side
    160.16x = 20,717.21
  5. Step 5: Solve for x
    x = 20,717.21/160.16
  6. Step 6: Final answer
    x = 129.35

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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.