Home / 84,839.20-127,258.80-80,951.20

Finding the Fourth Proportional to 84,839.20, 127,258.80 and 80,951.20

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Solution

The fourth proportional to 84,839.20, 127,258.80 and 80,951.20 is: 121,426.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,839.20 : 127,258.80 = 80,951.20 : x
  2. Step 2: Convert to fraction form
    84,839.20/127,258.80 = 80,951.20/x
  3. Step 3: Cross multiply
    84,839.20x = 127,258.80 × 80,951.20
  4. Step 4: Simplify right side
    84,839.20x = 10,301,752,570.56
  5. Step 5: Solve for x
    x = 10,301,752,570.56/84,839.20
  6. Step 6: Final answer
    x = 121,426.80

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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.