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Finding the Fourth Proportional to 139,906.39, 209,748.70 and 73,333.75

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Solution

The fourth proportional to 139,906.39, 209,748.70 and 73,333.75 is: 109,942.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,906.39 : 209,748.70 = 73,333.75 : x
  2. Step 2: Convert to fraction form
    139,906.39/209,748.70 = 73,333.75/x
  3. Step 3: Cross multiply
    139,906.39x = 209,748.70 × 73,333.75
  4. Step 4: Simplify right side
    139,906.39x = 15,381,658,728.63
  5. Step 5: Solve for x
    x = 15,381,658,728.63/139,906.39
  6. Step 6: Final answer
    x = 109,942.50

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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.