Home / 128,161.20-192,023.10-105,853.80

Finding the Fourth Proportional to 128,161.20, 192,023.10 and 105,853.80

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Solution

The fourth proportional to 128,161.20, 192,023.10 and 105,853.80 is: 158,600.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,161.20 : 192,023.10 = 105,853.80 : x
  2. Step 2: Convert to fraction form
    128,161.20/192,023.10 = 105,853.80/x
  3. Step 3: Cross multiply
    128,161.20x = 192,023.10 × 105,853.80
  4. Step 4: Simplify right side
    128,161.20x = 20,326,374,822.78
  5. Step 5: Solve for x
    x = 20,326,374,822.78/128,161.20
  6. Step 6: Final answer
    x = 158,600.07

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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.