Home / 143,943.82-198,642.45-80,280.25

Finding the Fourth Proportional to 143,943.82, 198,642.45 and 80,280.25

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Solution

The fourth proportional to 143,943.82, 198,642.45 and 80,280.25 is: 110,786.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,943.82 : 198,642.45 = 80,280.25 : x
  2. Step 2: Convert to fraction form
    143,943.82/198,642.45 = 80,280.25/x
  3. Step 3: Cross multiply
    143,943.82x = 198,642.45 × 80,280.25
  4. Step 4: Simplify right side
    143,943.82x = 15,947,065,546.61
  5. Step 5: Solve for x
    x = 15,947,065,546.61/143,943.82
  6. Step 6: Final answer
    x = 110,786.73

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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.