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Finding the Fourth Proportional to 154,884, 213,706.96 and 91,198.56

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Solution

The fourth proportional to 154,884, 213,706.96 and 91,198.56 is: 125,834.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,884 : 213,706.96 = 91,198.56 : x
  2. Step 2: Convert to fraction form
    154,884/213,706.96 = 91,198.56/x
  3. Step 3: Cross multiply
    154,884x = 213,706.96 × 91,198.56
  4. Step 4: Simplify right side
    154,884x = 19,489,767,013.98
  5. Step 5: Solve for x
    x = 19,489,767,013.98/154,884
  6. Step 6: Final answer
    x = 125,834.61

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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.