Home / 140,721.36-194,213.92-80,278.08

Finding the Fourth Proportional to 140,721.36, 194,213.92 and 80,278.08

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Solution

The fourth proportional to 140,721.36, 194,213.92 and 80,278.08 is: 110,794.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,721.36 : 194,213.92 = 80,278.08 : x
  2. Step 2: Convert to fraction form
    140,721.36/194,213.92 = 80,278.08/x
  3. Step 3: Cross multiply
    140,721.36x = 194,213.92 × 80,278.08
  4. Step 4: Simplify right side
    140,721.36x = 15,591,120,606.87
  5. Step 5: Solve for x
    x = 15,591,120,606.87/140,721.36
  6. Step 6: Final answer
    x = 110,794.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.