Home / 143,944.12-198,578.66-83,479.75

Finding the Fourth Proportional to 143,944.12, 198,578.66 and 83,479.75

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Solution

The fourth proportional to 143,944.12, 198,578.66 and 83,479.75 is: 115,164.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,944.12 : 198,578.66 = 83,479.75 : x
  2. Step 2: Convert to fraction form
    143,944.12/198,578.66 = 83,479.75/x
  3. Step 3: Cross multiply
    143,944.12x = 198,578.66 × 83,479.75
  4. Step 4: Simplify right side
    143,944.12x = 16,577,295,978.29
  5. Step 5: Solve for x
    x = 16,577,295,978.29/143,944.12
  6. Step 6: Final answer
    x = 115,164.80

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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.