Home / 139,749.76-192,790.18-82,349.87

Finding the Fourth Proportional to 139,749.76, 192,790.18 and 82,349.87

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Solution

The fourth proportional to 139,749.76, 192,790.18 and 82,349.87 is: 113,604.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,749.76 : 192,790.18 = 82,349.87 : x
  2. Step 2: Convert to fraction form
    139,749.76/192,790.18 = 82,349.87/x
  3. Step 3: Cross multiply
    139,749.76x = 192,790.18 × 82,349.87
  4. Step 4: Simplify right side
    139,749.76x = 15,876,244,936.05
  5. Step 5: Solve for x
    x = 15,876,244,936.05/139,749.76
  6. Step 6: Final answer
    x = 113,604.81

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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.