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Finding the Fourth Proportional to 106.12, 158.21 and 97.48

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Solution

The fourth proportional to 106.12, 158.21 and 97.48 is: 145.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    106.12 : 158.21 = 97.48 : x
  2. Step 2: Convert to fraction form
    106.12/158.21 = 97.48/x
  3. Step 3: Cross multiply
    106.12x = 158.21 × 97.48
  4. Step 4: Simplify right side
    106.12x = 15,422.31
  5. Step 5: Solve for x
    x = 15,422.31/106.12
  6. Step 6: Final answer
    x = 145.33

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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.