Home / 143,850.87-198,515.07-80,192.70

Finding the Fourth Proportional to 143,850.87, 198,515.07 and 80,192.70

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Solution

The fourth proportional to 143,850.87, 198,515.07 and 80,192.70 is: 110,666.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,850.87 : 198,515.07 = 80,192.70 : x
  2. Step 2: Convert to fraction form
    143,850.87/198,515.07 = 80,192.70/x
  3. Step 3: Cross multiply
    143,850.87x = 198,515.07 × 80,192.70
  4. Step 4: Simplify right side
    143,850.87x = 15,919,459,453.99
  5. Step 5: Solve for x
    x = 15,919,459,453.99/143,850.87
  6. Step 6: Final answer
    x = 110,666.41

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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.