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Finding the Fourth Proportional to 121,672.52, 182,358.10 and 68,922.08

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Solution

The fourth proportional to 121,672.52, 182,358.10 and 68,922.08 is: 103,297.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,672.52 : 182,358.10 = 68,922.08 : x
  2. Step 2: Convert to fraction form
    121,672.52/182,358.10 = 68,922.08/x
  3. Step 3: Cross multiply
    121,672.52x = 182,358.10 × 68,922.08
  4. Step 4: Simplify right side
    121,672.52x = 12,568,499,556.85
  5. Step 5: Solve for x
    x = 12,568,499,556.85/121,672.52
  6. Step 6: Final answer
    x = 103,297.77

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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.