Home / 139,163.39-192,145.34-85,520.33

Finding the Fourth Proportional to 139,163.39, 192,145.34 and 85,520.33

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Solution

The fourth proportional to 139,163.39, 192,145.34 and 85,520.33 is: 118,079.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,163.39 : 192,145.34 = 85,520.33 : x
  2. Step 2: Convert to fraction form
    139,163.39/192,145.34 = 85,520.33/x
  3. Step 3: Cross multiply
    139,163.39x = 192,145.34 × 85,520.33
  4. Step 4: Simplify right side
    139,163.39x = 16,432,332,884.76
  5. Step 5: Solve for x
    x = 16,432,332,884.76/139,163.39
  6. Step 6: Final answer
    x = 118,079.42

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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.