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Finding the Fourth Proportional to 106.60, 158.20 and 101.76

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Solution

The fourth proportional to 106.60, 158.20 and 101.76 is: 151.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    106.60 : 158.20 = 101.76 : x
  2. Step 2: Convert to fraction form
    106.60/158.20 = 101.76/x
  3. Step 3: Cross multiply
    106.60x = 158.20 × 101.76
  4. Step 4: Simplify right side
    106.60x = 16,098.43
  5. Step 5: Solve for x
    x = 16,098.43/106.60
  6. Step 6: Final answer
    x = 151.02

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.