Home / 143,921.88-198,613.06-80,263.70

Finding the Fourth Proportional to 143,921.88, 198,613.06 and 80,263.70

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Solution

The fourth proportional to 143,921.88, 198,613.06 and 80,263.70 is: 110,764.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,921.88 : 198,613.06 = 80,263.70 : x
  2. Step 2: Convert to fraction form
    143,921.88/198,613.06 = 80,263.70/x
  3. Step 3: Cross multiply
    143,921.88x = 198,613.06 × 80,263.70
  4. Step 4: Simplify right side
    143,921.88x = 15,941,419,063.92
  5. Step 5: Solve for x
    x = 15,941,419,063.92/143,921.88
  6. Step 6: Final answer
    x = 110,764.39

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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.