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Finding the Fourth Proportional to 116.66, 160.95 and 67.55

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Solution

The fourth proportional to 116.66, 160.95 and 67.55 is: 93.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.66 : 160.95 = 67.55 : x
  2. Step 2: Convert to fraction form
    116.66/160.95 = 67.55/x
  3. Step 3: Cross multiply
    116.66x = 160.95 × 67.55
  4. Step 4: Simplify right side
    116.66x = 10,872.57
  5. Step 5: Solve for x
    x = 10,872.57/116.66
  6. Step 6: Final answer
    x = 93.20

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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.