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Finding the Fourth Proportional to 106.83, 160.11 and 105.57

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Solution

The fourth proportional to 106.83, 160.11 and 105.57 is: 158.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    106.83 : 160.11 = 105.57 : x
  2. Step 2: Convert to fraction form
    106.83/160.11 = 105.57/x
  3. Step 3: Cross multiply
    106.83x = 160.11 × 105.57
  4. Step 4: Simplify right side
    106.83x = 16,902.81
  5. Step 5: Solve for x
    x = 16,902.81/106.83
  6. Step 6: Final answer
    x = 158.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.