Home / 139,546.72-192,568.66-79,121.45

Finding the Fourth Proportional to 139,546.72, 192,568.66 and 79,121.45

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Solution

The fourth proportional to 139,546.72, 192,568.66 and 79,121.45 is: 109,184.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,546.72 : 192,568.66 = 79,121.45 : x
  2. Step 2: Convert to fraction form
    139,546.72/192,568.66 = 79,121.45/x
  3. Step 3: Cross multiply
    139,546.72x = 192,568.66 × 79,121.45
  4. Step 4: Simplify right side
    139,546.72x = 15,236,310,245.31
  5. Step 5: Solve for x
    x = 15,236,310,245.31/139,546.72
  6. Step 6: Final answer
    x = 109,184.30

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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.