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Finding the Fourth Proportional to 188,385.60, 259,976.94 and 103,504.80

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Solution

The fourth proportional to 188,385.60, 259,976.94 and 103,504.80 is: 142,839.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,385.60 : 259,976.94 = 103,504.80 : x
  2. Step 2: Convert to fraction form
    188,385.60/259,976.94 = 103,504.80/x
  3. Step 3: Cross multiply
    188,385.60x = 259,976.94 × 103,504.80
  4. Step 4: Simplify right side
    188,385.60x = 26,908,861,179.31
  5. Step 5: Solve for x
    x = 26,908,861,179.31/188,385.60
  6. Step 6: Final answer
    x = 142,839.27

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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.