Home / 139,845.20-192,910.56-83,245.64

Finding the Fourth Proportional to 139,845.20, 192,910.56 and 83,245.64

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Solution

The fourth proportional to 139,845.20, 192,910.56 and 83,245.64 is: 114,833.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,845.20 : 192,910.56 = 83,245.64 : x
  2. Step 2: Convert to fraction form
    139,845.20/192,910.56 = 83,245.64/x
  3. Step 3: Cross multiply
    139,845.20x = 192,910.56 × 83,245.64
  4. Step 4: Simplify right side
    139,845.20x = 16,058,963,029.96
  5. Step 5: Solve for x
    x = 16,058,963,029.96/139,845.20
  6. Step 6: Final answer
    x = 114,833.85

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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.