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Finding the Fourth Proportional to 139,316.97, 208,975.46 and 34,135.03

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Solution

The fourth proportional to 139,316.97, 208,975.46 and 34,135.03 is: 51,202.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,316.97 : 208,975.46 = 34,135.03 : x
  2. Step 2: Convert to fraction form
    139,316.97/208,975.46 = 34,135.03/x
  3. Step 3: Cross multiply
    139,316.97x = 208,975.46 × 34,135.03
  4. Step 4: Simplify right side
    139,316.97x = 7,133,383,942.92
  5. Step 5: Solve for x
    x = 7,133,383,942.92/139,316.97
  6. Step 6: Final answer
    x = 51,202.55

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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.