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Finding the Fourth Proportional to 188,159.62, 259,562.19 and 115,578.87

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Solution

The fourth proportional to 188,159.62, 259,562.19 and 115,578.87 is: 159,438.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,159.62 : 259,562.19 = 115,578.87 : x
  2. Step 2: Convert to fraction form
    188,159.62/259,562.19 = 115,578.87/x
  3. Step 3: Cross multiply
    188,159.62x = 259,562.19 × 115,578.87
  4. Step 4: Simplify right side
    188,159.62x = 29,999,904,614.93
  5. Step 5: Solve for x
    x = 29,999,904,614.93/188,159.62
  6. Step 6: Final answer
    x = 159,438.59

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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.