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Finding the Fourth Proportional to 103,129.58, 154,694.49 and 28,250.37

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Solution

The fourth proportional to 103,129.58, 154,694.49 and 28,250.37 is: 42,375.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,129.58 : 154,694.49 = 28,250.37 : x
  2. Step 2: Convert to fraction form
    103,129.58/154,694.49 = 28,250.37/x
  3. Step 3: Cross multiply
    103,129.58x = 154,694.49 × 28,250.37
  4. Step 4: Simplify right side
    103,129.58x = 4,370,175,964.04
  5. Step 5: Solve for x
    x = 4,370,175,964.04/103,129.58
  6. Step 6: Final answer
    x = 42,375.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.