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Finding the Fourth Proportional to 193,740.39, 290,742.82 and 67,379.37

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Solution

The fourth proportional to 193,740.39, 290,742.82 and 67,379.37 is: 101,115.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,740.39 : 290,742.82 = 67,379.37 : x
  2. Step 2: Convert to fraction form
    193,740.39/290,742.82 = 67,379.37/x
  3. Step 3: Cross multiply
    193,740.39x = 290,742.82 × 67,379.37
  4. Step 4: Simplify right side
    193,740.39x = 19,590,068,043.62
  5. Step 5: Solve for x
    x = 19,590,068,043.62/193,740.39
  6. Step 6: Final answer
    x = 101,115.04

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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.