Home / 139,546.40-192,568.22-79,121.13

Finding the Fourth Proportional to 139,546.40, 192,568.22 and 79,121.13

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Solution

The fourth proportional to 139,546.40, 192,568.22 and 79,121.13 is: 109,183.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,546.40 : 192,568.22 = 79,121.13 : x
  2. Step 2: Convert to fraction form
    139,546.40/192,568.22 = 79,121.13/x
  3. Step 3: Cross multiply
    139,546.40x = 192,568.22 × 79,121.13
  4. Step 4: Simplify right side
    139,546.40x = 15,236,215,875.71
  5. Step 5: Solve for x
    x = 15,236,215,875.71/139,546.40
  6. Step 6: Final answer
    x = 109,183.87

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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.