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Finding the Fourth Proportional to 139,906.27, 209,921.37 and 73,330.57

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Solution

The fourth proportional to 139,906.27, 209,921.37 and 73,330.57 is: 110,028.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,906.27 : 209,921.37 = 73,330.57 : x
  2. Step 2: Convert to fraction form
    139,906.27/209,921.37 = 73,330.57/x
  3. Step 3: Cross multiply
    139,906.27x = 209,921.37 × 73,330.57
  4. Step 4: Simplify right side
    139,906.27x = 15,393,652,301.02
  5. Step 5: Solve for x
    x = 15,393,652,301.02/139,906.27
  6. Step 6: Final answer
    x = 110,028.33

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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.