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Finding the Fourth Proportional to 188,711.22, 260,425.45 and 103,828.44

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Solution

The fourth proportional to 188,711.22, 260,425.45 and 103,828.44 is: 143,285.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,711.22 : 260,425.45 = 103,828.44 : x
  2. Step 2: Convert to fraction form
    188,711.22/260,425.45 = 103,828.44/x
  3. Step 3: Cross multiply
    188,711.22x = 260,425.45 × 103,828.44
  4. Step 4: Simplify right side
    188,711.22x = 27,039,566,648.10
  5. Step 5: Solve for x
    x = 27,039,566,648.10/188,711.22
  6. Step 6: Final answer
    x = 143,285.43

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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.