Home / 143,683.10-198,288.84-80,020.90

Finding the Fourth Proportional to 143,683.10, 198,288.84 and 80,020.90

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Solution

The fourth proportional to 143,683.10, 198,288.84 and 80,020.90 is: 110,432.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,683.10 : 198,288.84 = 80,020.90 : x
  2. Step 2: Convert to fraction form
    143,683.10/198,288.84 = 80,020.90/x
  3. Step 3: Cross multiply
    143,683.10x = 198,288.84 × 80,020.90
  4. Step 4: Simplify right side
    143,683.10x = 15,867,251,436.76
  5. Step 5: Solve for x
    x = 15,867,251,436.76/143,683.10
  6. Step 6: Final answer
    x = 110,432.27

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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.