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Finding the Fourth Proportional to 103.89, 156.03 and 97.41

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Solution

The fourth proportional to 103.89, 156.03 and 97.41 is: 146.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103.89 : 156.03 = 97.41 : x
  2. Step 2: Convert to fraction form
    103.89/156.03 = 97.41/x
  3. Step 3: Cross multiply
    103.89x = 156.03 × 97.41
  4. Step 4: Simplify right side
    103.89x = 15,198.88
  5. Step 5: Solve for x
    x = 15,198.88/103.89
  6. Step 6: Final answer
    x = 146.30

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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.