Home / 143,945.54-198,645.20-80,287.46

Finding the Fourth Proportional to 143,945.54, 198,645.20 and 80,287.46

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Solution

The fourth proportional to 143,945.54, 198,645.20 and 80,287.46 is: 110,796.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,945.54 : 198,645.20 = 80,287.46 : x
  2. Step 2: Convert to fraction form
    143,945.54/198,645.20 = 80,287.46/x
  3. Step 3: Cross multiply
    143,945.54x = 198,645.20 × 80,287.46
  4. Step 4: Simplify right side
    143,945.54x = 15,948,718,549.19
  5. Step 5: Solve for x
    x = 15,948,718,549.19/143,945.54
  6. Step 6: Final answer
    x = 110,796.89

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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.