Home / 143,945.10-198,630.42-80,287.08

Finding the Fourth Proportional to 143,945.10, 198,630.42 and 80,287.08

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Solution

The fourth proportional to 143,945.10, 198,630.42 and 80,287.08 is: 110,788.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,945.10 : 198,630.42 = 80,287.08 : x
  2. Step 2: Convert to fraction form
    143,945.10/198,630.42 = 80,287.08/x
  3. Step 3: Cross multiply
    143,945.10x = 198,630.42 × 80,287.08
  4. Step 4: Simplify right side
    143,945.10x = 15,947,456,420.97
  5. Step 5: Solve for x
    x = 15,947,456,420.97/143,945.10
  6. Step 6: Final answer
    x = 110,788.46

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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.