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Finding the Fourth Proportional to 188,367.21, 259,946.82 and 103,489.74

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Solution

The fourth proportional to 188,367.21, 259,946.82 and 103,489.74 is: 142,815.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,367.21 : 259,946.82 = 103,489.74 : x
  2. Step 2: Convert to fraction form
    188,367.21/259,946.82 = 103,489.74/x
  3. Step 3: Cross multiply
    188,367.21x = 259,946.82 × 103,489.74
  4. Step 4: Simplify right side
    188,367.21x = 26,901,828,815.63
  5. Step 5: Solve for x
    x = 26,901,828,815.63/188,367.21
  6. Step 6: Final answer
    x = 142,815.88

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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.