Home / 143,986.32-198,698.76-80,331.12

Finding the Fourth Proportional to 143,986.32, 198,698.76 and 80,331.12

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Solution

The fourth proportional to 143,986.32, 198,698.76 and 80,331.12 is: 110,855.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,986.32 : 198,698.76 = 80,331.12 : x
  2. Step 2: Convert to fraction form
    143,986.32/198,698.76 = 80,331.12/x
  3. Step 3: Cross multiply
    143,986.32x = 198,698.76 × 80,331.12
  4. Step 4: Simplify right side
    143,986.32x = 15,961,693,933.41
  5. Step 5: Solve for x
    x = 15,961,693,933.41/143,986.32
  6. Step 6: Final answer
    x = 110,855.63

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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.