Home / 143,687.20-198,288.12-80,030.56

Finding the Fourth Proportional to 143,687.20, 198,288.12 and 80,030.56

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Solution

The fourth proportional to 143,687.20, 198,288.12 and 80,030.56 is: 110,442.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,687.20 : 198,288.12 = 80,030.56 : x
  2. Step 2: Convert to fraction form
    143,687.20/198,288.12 = 80,030.56/x
  3. Step 3: Cross multiply
    143,687.20x = 198,288.12 × 80,030.56
  4. Step 4: Simplify right side
    143,687.20x = 15,869,109,284.95
  5. Step 5: Solve for x
    x = 15,869,109,284.95/143,687.20
  6. Step 6: Final answer
    x = 110,442.05

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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.