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Finding the Fourth Proportional to 106.40, 160.43 and 93.49

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Solution

The fourth proportional to 106.40, 160.43 and 93.49 is: 140.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    106.40 : 160.43 = 93.49 : x
  2. Step 2: Convert to fraction form
    106.40/160.43 = 93.49/x
  3. Step 3: Cross multiply
    106.40x = 160.43 × 93.49
  4. Step 4: Simplify right side
    106.40x = 14,998.60
  5. Step 5: Solve for x
    x = 14,998.60/106.40
  6. Step 6: Final answer
    x = 140.96

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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.