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Finding the Fourth Proportional to 188,841.52, 260,606.46 and 103,963.78

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Solution

The fourth proportional to 188,841.52, 260,606.46 and 103,963.78 is: 143,472.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,841.52 : 260,606.46 = 103,963.78 : x
  2. Step 2: Convert to fraction form
    188,841.52/260,606.46 = 103,963.78/x
  3. Step 3: Cross multiply
    188,841.52x = 260,606.46 × 103,963.78
  4. Step 4: Simplify right side
    188,841.52x = 27,093,632,674.02
  5. Step 5: Solve for x
    x = 27,093,632,674.02/188,841.52
  6. Step 6: Final answer
    x = 143,472.86

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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.