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Finding the Fourth Proportional to 143,752.58, 198,380.73 and 82,508.90

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Solution

The fourth proportional to 143,752.58, 198,380.73 and 82,508.90 is: 113,863.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,752.58 : 198,380.73 = 82,508.90 : x
  2. Step 2: Convert to fraction form
    143,752.58/198,380.73 = 82,508.90/x
  3. Step 3: Cross multiply
    143,752.58x = 198,380.73 × 82,508.90
  4. Step 4: Simplify right side
    143,752.58x = 16,368,175,813.50
  5. Step 5: Solve for x
    x = 16,368,175,813.50/143,752.58
  6. Step 6: Final answer
    x = 113,863.53

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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.