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Finding the Fourth Proportional to 143,701, 198,313.44 and 80,038.78

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Solution

The fourth proportional to 143,701, 198,313.44 and 80,038.78 is: 110,456.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,701 : 198,313.44 = 80,038.78 : x
  2. Step 2: Convert to fraction form
    143,701/198,313.44 = 80,038.78/x
  3. Step 3: Cross multiply
    143,701x = 198,313.44 × 80,038.78
  4. Step 4: Simplify right side
    143,701x = 15,872,765,795.20
  5. Step 5: Solve for x
    x = 15,872,765,795.20/143,701
  6. Step 6: Final answer
    x = 110,456.89

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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.