Home / 128,247.50-192,391.92-39,500.96

Finding the Fourth Proportional to 128,247.50, 192,391.92 and 39,500.96

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Solution

The fourth proportional to 128,247.50, 192,391.92 and 39,500.96 is: 59,257.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,247.50 : 192,391.92 = 39,500.96 : x
  2. Step 2: Convert to fraction form
    128,247.50/192,391.92 = 39,500.96/x
  3. Step 3: Cross multiply
    128,247.50x = 192,391.92 × 39,500.96
  4. Step 4: Simplify right side
    128,247.50x = 7,599,665,338.74
  5. Step 5: Solve for x
    x = 7,599,665,338.74/128,247.50
  6. Step 6: Final answer
    x = 59,257.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.