Home / 139,315.42-192,187.11-82,686.70

Finding the Fourth Proportional to 139,315.42, 192,187.11 and 82,686.70

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Solution

The fourth proportional to 139,315.42, 192,187.11 and 82,686.70 is: 114,067.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,315.42 : 192,187.11 = 82,686.70 : x
  2. Step 2: Convert to fraction form
    139,315.42/192,187.11 = 82,686.70/x
  3. Step 3: Cross multiply
    139,315.42x = 192,187.11 × 82,686.70
  4. Step 4: Simplify right side
    139,315.42x = 15,891,317,908.44
  5. Step 5: Solve for x
    x = 15,891,317,908.44/139,315.42
  6. Step 6: Final answer
    x = 114,067.19

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1.5x scale

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.