Home / 143,660.43-198,251.69-80,000.51

Finding the Fourth Proportional to 143,660.43, 198,251.69 and 80,000.51

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Solution

The fourth proportional to 143,660.43, 198,251.69 and 80,000.51 is: 110,400.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,660.43 : 198,251.69 = 80,000.51 : x
  2. Step 2: Convert to fraction form
    143,660.43/198,251.69 = 80,000.51/x
  3. Step 3: Cross multiply
    143,660.43x = 198,251.69 × 80,000.51
  4. Step 4: Simplify right side
    143,660.43x = 15,860,234,917.10
  5. Step 5: Solve for x
    x = 15,860,234,917.10/143,660.43
  6. Step 6: Final answer
    x = 110,400.86

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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.