Home / 143,659.20-198,249.48-80,002.56

Finding the Fourth Proportional to 143,659.20, 198,249.48 and 80,002.56

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Solution

The fourth proportional to 143,659.20, 198,249.48 and 80,002.56 is: 110,403.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,659.20 : 198,249.48 = 80,002.56 : x
  2. Step 2: Convert to fraction form
    143,659.20/198,249.48 = 80,002.56/x
  3. Step 3: Cross multiply
    143,659.20x = 198,249.48 × 80,002.56
  4. Step 4: Simplify right side
    143,659.20x = 15,860,465,918.67
  5. Step 5: Solve for x
    x = 15,860,465,918.67/143,659.20
  6. Step 6: Final answer
    x = 110,403.41

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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.