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Finding the Fourth Proportional to 160.86, 240.87 and 83.85

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Solution

The fourth proportional to 160.86, 240.87 and 83.85 is: 125.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.86 : 240.87 = 83.85 : x
  2. Step 2: Convert to fraction form
    160.86/240.87 = 83.85/x
  3. Step 3: Cross multiply
    160.86x = 240.87 × 83.85
  4. Step 4: Simplify right side
    160.86x = 20,196.95
  5. Step 5: Solve for x
    x = 20,196.95/160.86
  6. Step 6: Final answer
    x = 125.56

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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.