Home / 139,786.97-192,931.29-82,422.87

Finding the Fourth Proportional to 139,786.97, 192,931.29 and 82,422.87

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Solution

The fourth proportional to 139,786.97, 192,931.29 and 82,422.87 is: 113,758.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,786.97 : 192,931.29 = 82,422.87 : x
  2. Step 2: Convert to fraction form
    139,786.97/192,931.29 = 82,422.87/x
  3. Step 3: Cross multiply
    139,786.97x = 192,931.29 × 82,422.87
  4. Step 4: Simplify right side
    139,786.97x = 15,901,950,142.92
  5. Step 5: Solve for x
    x = 15,901,950,142.92/139,786.97
  6. Step 6: Final answer
    x = 113,758.46

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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.