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Finding the Fourth Proportional to 107.43, 161.84 and 93.89

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Solution

The fourth proportional to 107.43, 161.84 and 93.89 is: 141.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.43 : 161.84 = 93.89 : x
  2. Step 2: Convert to fraction form
    107.43/161.84 = 93.89/x
  3. Step 3: Cross multiply
    107.43x = 161.84 × 93.89
  4. Step 4: Simplify right side
    107.43x = 15,193.88
  5. Step 5: Solve for x
    x = 15,193.88/107.43
  6. Step 6: Final answer
    x = 141.43

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.