Home / 143,945.04-198,644.50-80,286.96

Finding the Fourth Proportional to 143,945.04, 198,644.50 and 80,286.96

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Solution

The fourth proportional to 143,945.04, 198,644.50 and 80,286.96 is: 110,796.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,945.04 : 198,644.50 = 80,286.96 : x
  2. Step 2: Convert to fraction form
    143,945.04/198,644.50 = 80,286.96/x
  3. Step 3: Cross multiply
    143,945.04x = 198,644.50 × 80,286.96
  4. Step 4: Simplify right side
    143,945.04x = 15,948,563,025.72
  5. Step 5: Solve for x
    x = 15,948,563,025.72/143,945.04
  6. Step 6: Final answer
    x = 110,796.20

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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.