Home / 143,680.62-198,285.41-80,018.42

Finding the Fourth Proportional to 143,680.62, 198,285.41 and 80,018.42

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Solution

The fourth proportional to 143,680.62, 198,285.41 and 80,018.42 is: 110,428.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,680.62 : 198,285.41 = 80,018.42 : x
  2. Step 2: Convert to fraction form
    143,680.62/198,285.41 = 80,018.42/x
  3. Step 3: Cross multiply
    143,680.62x = 198,285.41 × 80,018.42
  4. Step 4: Simplify right side
    143,680.62x = 15,866,485,541.23
  5. Step 5: Solve for x
    x = 15,866,485,541.23/143,680.62
  6. Step 6: Final answer
    x = 110,428.85

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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.