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Finding the Fourth Proportional to 139,268.96, 208,640.32 and 107,950.88

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Solution

The fourth proportional to 139,268.96, 208,640.32 and 107,950.88 is: 161,722.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,268.96 : 208,640.32 = 107,950.88 : x
  2. Step 2: Convert to fraction form
    139,268.96/208,640.32 = 107,950.88/x
  3. Step 3: Cross multiply
    139,268.96x = 208,640.32 × 107,950.88
  4. Step 4: Simplify right side
    139,268.96x = 22,522,906,147.48
  5. Step 5: Solve for x
    x = 22,522,906,147.48/139,268.96
  6. Step 6: Final answer
    x = 161,722.37

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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.