Home / 139,401.80-192,358.05-82,028.49

Finding the Fourth Proportional to 139,401.80, 192,358.05 and 82,028.49

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Solution

The fourth proportional to 139,401.80, 192,358.05 and 82,028.49 is: 113,189.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,401.80 : 192,358.05 = 82,028.49 : x
  2. Step 2: Convert to fraction form
    139,401.80/192,358.05 = 82,028.49/x
  3. Step 3: Cross multiply
    139,401.80x = 192,358.05 × 82,028.49
  4. Step 4: Simplify right side
    139,401.80x = 15,778,840,380.84
  5. Step 5: Solve for x
    x = 15,778,840,380.84/139,401.80
  6. Step 6: Final answer
    x = 113,189.65

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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.