Home / 143,685.63-198,286.19-80,023.43

Finding the Fourth Proportional to 143,685.63, 198,286.19 and 80,023.43

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Solution

The fourth proportional to 143,685.63, 198,286.19 and 80,023.43 is: 110,432.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,685.63 : 198,286.19 = 80,023.43 : x
  2. Step 2: Convert to fraction form
    143,685.63/198,286.19 = 80,023.43/x
  3. Step 3: Cross multiply
    143,685.63x = 198,286.19 × 80,023.43
  4. Step 4: Simplify right side
    143,685.63x = 15,867,539,653.88
  5. Step 5: Solve for x
    x = 15,867,539,653.88/143,685.63
  6. Step 6: Final answer
    x = 110,432.34

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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.