Home / 128,195.43-192,311.37-39,456.33

Finding the Fourth Proportional to 128,195.43, 192,311.37 and 39,456.33

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Solution

The fourth proportional to 128,195.43, 192,311.37 and 39,456.33 is: 59,190.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,195.43 : 192,311.37 = 39,456.33 : x
  2. Step 2: Convert to fraction form
    128,195.43/192,311.37 = 39,456.33/x
  3. Step 3: Cross multiply
    128,195.43x = 192,311.37 × 39,456.33
  4. Step 4: Simplify right side
    128,195.43x = 7,587,900,877.47
  5. Step 5: Solve for x
    x = 7,587,900,877.47/128,195.43
  6. Step 6: Final answer
    x = 59,190.10

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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.