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Finding the Fourth Proportional to 137,622, 206,467.68 and 39,126

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Solution

The fourth proportional to 137,622, 206,467.68 and 39,126 is: 58,698.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,622 : 206,467.68 = 39,126 : x
  2. Step 2: Convert to fraction form
    137,622/206,467.68 = 39,126/x
  3. Step 3: Cross multiply
    137,622x = 206,467.68 × 39,126
  4. Step 4: Simplify right side
    137,622x = 8,078,254,447.68
  5. Step 5: Solve for x
    x = 8,078,254,447.68/137,622
  6. Step 6: Final answer
    x = 58,698.86

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.