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Finding the Fourth Proportional to 188,042.91, 259,505.97 and 103,162.47

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Solution

The fourth proportional to 188,042.91, 259,505.97 and 103,162.47 is: 142,367.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,042.91 : 259,505.97 = 103,162.47 : x
  2. Step 2: Convert to fraction form
    188,042.91/259,505.97 = 103,162.47/x
  3. Step 3: Cross multiply
    188,042.91x = 259,505.97 × 103,162.47
  4. Step 4: Simplify right side
    188,042.91x = 26,771,276,844.95
  5. Step 5: Solve for x
    x = 26,771,276,844.95/188,042.91
  6. Step 6: Final answer
    x = 142,367.91

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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.