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Finding the Fourth Proportional to 139,958.97, 209,932.08 and 45,193.53

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Solution

The fourth proportional to 139,958.97, 209,932.08 and 45,193.53 is: 67,788.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,958.97 : 209,932.08 = 45,193.53 : x
  2. Step 2: Convert to fraction form
    139,958.97/209,932.08 = 45,193.53/x
  3. Step 3: Cross multiply
    139,958.97x = 209,932.08 × 45,193.53
  4. Step 4: Simplify right side
    139,958.97x = 9,487,571,755.44
  5. Step 5: Solve for x
    x = 9,487,571,755.44/139,958.97
  6. Step 6: Final answer
    x = 67,788.24

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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.