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Finding the Fourth Proportional to 139,167.74, 192,051.87 and 75,505.39

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Solution

The fourth proportional to 139,167.74, 192,051.87 and 75,505.39 is: 104,197.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,167.74 : 192,051.87 = 75,505.39 : x
  2. Step 2: Convert to fraction form
    139,167.74/192,051.87 = 75,505.39/x
  3. Step 3: Cross multiply
    139,167.74x = 192,051.87 × 75,505.39
  4. Step 4: Simplify right side
    139,167.74x = 14,500,951,344.58
  5. Step 5: Solve for x
    x = 14,500,951,344.58/139,167.74
  6. Step 6: Final answer
    x = 104,197.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.