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Finding the Fourth Proportional to 203,940.51, 306,097.53 and 104,170.65

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Solution

The fourth proportional to 203,940.51, 306,097.53 and 104,170.65 is: 156,351.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,940.51 : 306,097.53 = 104,170.65 : x
  2. Step 2: Convert to fraction form
    203,940.51/306,097.53 = 104,170.65/x
  3. Step 3: Cross multiply
    203,940.51x = 306,097.53 × 104,170.65
  4. Step 4: Simplify right side
    203,940.51x = 31,886,378,663.49
  5. Step 5: Solve for x
    x = 31,886,378,663.49/203,940.51
  6. Step 6: Final answer
    x = 156,351.37

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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.