Home / 139,789.84-192,906.44-80,170

Finding the Fourth Proportional to 139,789.84, 192,906.44 and 80,170

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Solution

The fourth proportional to 139,789.84, 192,906.44 and 80,170 is: 110,632.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,789.84 : 192,906.44 = 80,170 : x
  2. Step 2: Convert to fraction form
    139,789.84/192,906.44 = 80,170/x
  3. Step 3: Cross multiply
    139,789.84x = 192,906.44 × 80,170
  4. Step 4: Simplify right side
    139,789.84x = 15,465,309,294.80
  5. Step 5: Solve for x
    x = 15,465,309,294.80/139,789.84
  6. Step 6: Final answer
    x = 110,632.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.