Home / 131,939.20-197,908.80-127,273.60

Finding the Fourth Proportional to 131,939.20, 197,908.80 and 127,273.60

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Solution

The fourth proportional to 131,939.20, 197,908.80 and 127,273.60 is: 190,910.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,939.20 : 197,908.80 = 127,273.60 : x
  2. Step 2: Convert to fraction form
    131,939.20/197,908.80 = 127,273.60/x
  3. Step 3: Cross multiply
    131,939.20x = 197,908.80 × 127,273.60
  4. Step 4: Simplify right side
    131,939.20x = 25,188,565,447.68
  5. Step 5: Solve for x
    x = 25,188,565,447.68/131,939.20
  6. Step 6: Final answer
    x = 190,910.40

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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.