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Finding the Fourth Proportional to 188,686.65, 260,761.17 and 154,641.44

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Solution

The fourth proportional to 188,686.65, 260,761.17 and 154,641.44 is: 213,711.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,686.65 : 260,761.17 = 154,641.44 : x
  2. Step 2: Convert to fraction form
    188,686.65/260,761.17 = 154,641.44/x
  3. Step 3: Cross multiply
    188,686.65x = 260,761.17 × 154,641.44
  4. Step 4: Simplify right side
    188,686.65x = 40,324,482,824.88
  5. Step 5: Solve for x
    x = 40,324,482,824.88/188,686.65
  6. Step 6: Final answer
    x = 213,711.37

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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.