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Finding the Fourth Proportional to 139,049.67, 208,336.44 and 75,914.18

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Solution

The fourth proportional to 139,049.67, 208,336.44 and 75,914.18 is: 113,741.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,049.67 : 208,336.44 = 75,914.18 : x
  2. Step 2: Convert to fraction form
    139,049.67/208,336.44 = 75,914.18/x
  3. Step 3: Cross multiply
    139,049.67x = 208,336.44 × 75,914.18
  4. Step 4: Simplify right side
    139,049.67x = 15,815,690,030.98
  5. Step 5: Solve for x
    x = 15,815,690,030.98/139,049.67
  6. Step 6: Final answer
    x = 113,741.30

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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.