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Finding the Fourth Proportional to 137,755.74, 206,667.93 and 39,259.74

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Solution

The fourth proportional to 137,755.74, 206,667.93 and 39,259.74 is: 58,899.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,755.74 : 206,667.93 = 39,259.74 : x
  2. Step 2: Convert to fraction form
    137,755.74/206,667.93 = 39,259.74/x
  3. Step 3: Cross multiply
    137,755.74x = 206,667.93 × 39,259.74
  4. Step 4: Simplify right side
    137,755.74x = 8,113,729,198.14
  5. Step 5: Solve for x
    x = 8,113,729,198.14/137,755.74
  6. Step 6: Final answer
    x = 58,899.39

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Why These Related Problems?

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