Home / 143,989.38-198,704.75-80,327.23

Finding the Fourth Proportional to 143,989.38, 198,704.75 and 80,327.23

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Solution

The fourth proportional to 143,989.38, 198,704.75 and 80,327.23 is: 110,851.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,989.38 : 198,704.75 = 80,327.23 : x
  2. Step 2: Convert to fraction form
    143,989.38/198,704.75 = 80,327.23/x
  3. Step 3: Cross multiply
    143,989.38x = 198,704.75 × 80,327.23
  4. Step 4: Simplify right side
    143,989.38x = 15,961,401,256.94
  5. Step 5: Solve for x
    x = 15,961,401,256.94/143,989.38
  6. Step 6: Final answer
    x = 110,851.24

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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.