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Finding the Fourth Proportional to 106.62, 158.89 and 103.36

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Solution

The fourth proportional to 106.62, 158.89 and 103.36 is: 154.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    106.62 : 158.89 = 103.36 : x
  2. Step 2: Convert to fraction form
    106.62/158.89 = 103.36/x
  3. Step 3: Cross multiply
    106.62x = 158.89 × 103.36
  4. Step 4: Simplify right side
    106.62x = 16,422.87
  5. Step 5: Solve for x
    x = 16,422.87/106.62
  6. Step 6: Final answer
    x = 154.03

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.