Home / 128,139.60-192,209.40-57,062.10

Finding the Fourth Proportional to 128,139.60, 192,209.40 and 57,062.10

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Solution

The fourth proportional to 128,139.60, 192,209.40 and 57,062.10 is: 85,593.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,139.60 : 192,209.40 = 57,062.10 : x
  2. Step 2: Convert to fraction form
    128,139.60/192,209.40 = 57,062.10/x
  3. Step 3: Cross multiply
    128,139.60x = 192,209.40 × 57,062.10
  4. Step 4: Simplify right side
    128,139.60x = 10,967,872,003.74
  5. Step 5: Solve for x
    x = 10,967,872,003.74/128,139.60
  6. Step 6: Final answer
    x = 85,593.15

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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.