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Finding the Fourth Proportional to 188,286.54, 259,837.11 and 103,404.21

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Solution

The fourth proportional to 188,286.54, 259,837.11 and 103,404.21 is: 142,698.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,286.54 : 259,837.11 = 103,404.21 : x
  2. Step 2: Convert to fraction form
    188,286.54/259,837.11 = 103,404.21/x
  3. Step 3: Cross multiply
    188,286.54x = 259,837.11 × 103,404.21
  4. Step 4: Simplify right side
    188,286.54x = 26,868,251,088.23
  5. Step 5: Solve for x
    x = 26,868,251,088.23/188,286.54
  6. Step 6: Final answer
    x = 142,698.74

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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.