Home / 143,839.28-198,500.80-80,170.24

Finding the Fourth Proportional to 143,839.28, 198,500.80 and 80,170.24

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Solution

The fourth proportional to 143,839.28, 198,500.80 and 80,170.24 is: 110,636.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,839.28 : 198,500.80 = 80,170.24 : x
  2. Step 2: Convert to fraction form
    143,839.28/198,500.80 = 80,170.24/x
  3. Step 3: Cross multiply
    143,839.28x = 198,500.80 × 80,170.24
  4. Step 4: Simplify right side
    143,839.28x = 15,913,856,776.19
  5. Step 5: Solve for x
    x = 15,913,856,776.19/143,839.28
  6. Step 6: Final answer
    x = 110,636.38

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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.