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Finding the Fourth Proportional to 188,517.84, 260,154.62 and 103,634.91

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Solution

The fourth proportional to 188,517.84, 260,154.62 and 103,634.91 is: 143,016.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,517.84 : 260,154.62 = 103,634.91 : x
  2. Step 2: Convert to fraction form
    188,517.84/260,154.62 = 103,634.91/x
  3. Step 3: Cross multiply
    188,517.84x = 260,154.62 × 103,634.91
  4. Step 4: Simplify right side
    188,517.84x = 26,961,100,629.78
  5. Step 5: Solve for x
    x = 26,961,100,629.78/188,517.84
  6. Step 6: Final answer
    x = 143,016.18

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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.