Home / 127,952.20-191,928.30-85,961.80

Finding the Fourth Proportional to 127,952.20, 191,928.30 and 85,961.80

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Solution

The fourth proportional to 127,952.20, 191,928.30 and 85,961.80 is: 128,942.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,952.20 : 191,928.30 = 85,961.80 : x
  2. Step 2: Convert to fraction form
    127,952.20/191,928.30 = 85,961.80/x
  3. Step 3: Cross multiply
    127,952.20x = 191,928.30 × 85,961.80
  4. Step 4: Simplify right side
    127,952.20x = 16,498,502,138.94
  5. Step 5: Solve for x
    x = 16,498,502,138.94/127,952.20
  6. Step 6: Final answer
    x = 128,942.70

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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.