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Finding the Fourth Proportional to 188,753.58, 260,481.78 and 103,872.60

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Solution

The fourth proportional to 188,753.58, 260,481.78 and 103,872.60 is: 143,345.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,753.58 : 260,481.78 = 103,872.60 : x
  2. Step 2: Convert to fraction form
    188,753.58/260,481.78 = 103,872.60/x
  3. Step 3: Cross multiply
    188,753.58x = 260,481.78 × 103,872.60
  4. Step 4: Simplify right side
    188,753.58x = 27,056,919,741.23
  5. Step 5: Solve for x
    x = 27,056,919,741.23/188,753.58
  6. Step 6: Final answer
    x = 143,345.20

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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.