Home / 127,649.28-191,351.04-80,785.92

Finding the Fourth Proportional to 127,649.28, 191,351.04 and 80,785.92

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Solution

The fourth proportional to 127,649.28, 191,351.04 and 80,785.92 is: 121,101.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,649.28 : 191,351.04 = 80,785.92 : x
  2. Step 2: Convert to fraction form
    127,649.28/191,351.04 = 80,785.92/x
  3. Step 3: Cross multiply
    127,649.28x = 191,351.04 × 80,785.92
  4. Step 4: Simplify right side
    127,649.28x = 15,458,469,809.36
  5. Step 5: Solve for x
    x = 15,458,469,809.36/127,649.28
  6. Step 6: Final answer
    x = 121,101.11

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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.