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Finding the Fourth Proportional to 128,842.26, 193,260.22 and 49,956.51

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Solution

The fourth proportional to 128,842.26, 193,260.22 and 49,956.51 is: 74,933.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,842.26 : 193,260.22 = 49,956.51 : x
  2. Step 2: Convert to fraction form
    128,842.26/193,260.22 = 49,956.51/x
  3. Step 3: Cross multiply
    128,842.26x = 193,260.22 × 49,956.51
  4. Step 4: Simplify right side
    128,842.26x = 9,654,605,629.88
  5. Step 5: Solve for x
    x = 9,654,605,629.88/128,842.26
  6. Step 6: Final answer
    x = 74,933.54

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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.