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Finding the Fourth Proportional to 188,736.50, 260,458.22 and 103,855.39

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Solution

The fourth proportional to 188,736.50, 260,458.22 and 103,855.39 is: 143,321.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,736.50 : 260,458.22 = 103,855.39 : x
  2. Step 2: Convert to fraction form
    188,736.50/260,458.22 = 103,855.39/x
  3. Step 3: Cross multiply
    188,736.50x = 260,458.22 × 103,855.39
  4. Step 4: Simplify right side
    188,736.50x = 27,049,988,195.24
  5. Step 5: Solve for x
    x = 27,049,988,195.24/188,736.50
  6. Step 6: Final answer
    x = 143,321.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.