Home / 143,745.89-198,370.62-79,217.44

Finding the Fourth Proportional to 143,745.89, 198,370.62 and 79,217.44

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Solution

The fourth proportional to 143,745.89, 198,370.62 and 79,217.44 is: 109,320.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,745.89 : 198,370.62 = 79,217.44 : x
  2. Step 2: Convert to fraction form
    143,745.89/198,370.62 = 79,217.44/x
  3. Step 3: Cross multiply
    143,745.89x = 198,370.62 × 79,217.44
  4. Step 4: Simplify right side
    143,745.89x = 15,714,412,191.69
  5. Step 5: Solve for x
    x = 15,714,412,191.69/143,745.89
  6. Step 6: Final answer
    x = 109,320.78

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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.