Home / 139,750.38-192,850.92-76,086.72

Finding the Fourth Proportional to 139,750.38, 192,850.92 and 76,086.72

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Solution

The fourth proportional to 139,750.38, 192,850.92 and 76,086.72 is: 104,997.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,750.38 : 192,850.92 = 76,086.72 : x
  2. Step 2: Convert to fraction form
    139,750.38/192,850.92 = 76,086.72/x
  3. Step 3: Cross multiply
    139,750.38x = 192,850.92 × 76,086.72
  4. Step 4: Simplify right side
    139,750.38x = 14,673,393,951.78
  5. Step 5: Solve for x
    x = 14,673,393,951.78/139,750.38
  6. Step 6: Final answer
    x = 104,997.17

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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.