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Finding the Fourth Proportional to 164,819.73, 247,081.96 and 85,843.51

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Solution

The fourth proportional to 164,819.73, 247,081.96 and 85,843.51 is: 128,688.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,819.73 : 247,081.96 = 85,843.51 : x
  2. Step 2: Convert to fraction form
    164,819.73/247,081.96 = 85,843.51/x
  3. Step 3: Cross multiply
    164,819.73x = 247,081.96 × 85,843.51
  4. Step 4: Simplify right side
    164,819.73x = 21,210,382,704.08
  5. Step 5: Solve for x
    x = 21,210,382,704.08/164,819.73
  6. Step 6: Final answer
    x = 128,688.37

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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.