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Finding the Fourth Proportional to 143,994.83, 198,711.14 and 79,464.56

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Solution

The fourth proportional to 143,994.83, 198,711.14 and 79,464.56 is: 109,660.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,994.83 : 198,711.14 = 79,464.56 : x
  2. Step 2: Convert to fraction form
    143,994.83/198,711.14 = 79,464.56/x
  3. Step 3: Cross multiply
    143,994.83x = 198,711.14 × 79,464.56
  4. Step 4: Simplify right side
    143,994.83x = 15,790,491,916.32
  5. Step 5: Solve for x
    x = 15,790,491,916.32/143,994.83
  6. Step 6: Final answer
    x = 109,660.13

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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.