Home / 128,593.20-192,808.80-53,765.40

Finding the Fourth Proportional to 128,593.20, 192,808.80 and 53,765.40

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Solution

The fourth proportional to 128,593.20, 192,808.80 and 53,765.40 is: 80,614.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,593.20 : 192,808.80 = 53,765.40 : x
  2. Step 2: Convert to fraction form
    128,593.20/192,808.80 = 53,765.40/x
  3. Step 3: Cross multiply
    128,593.20x = 192,808.80 × 53,765.40
  4. Step 4: Simplify right side
    128,593.20x = 10,366,442,255.52
  5. Step 5: Solve for x
    x = 10,366,442,255.52/128,593.20
  6. Step 6: Final answer
    x = 80,614.23

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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.