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Finding the Fourth Proportional to 103,161.73, 154,742.60 and 68,093.19

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Solution

The fourth proportional to 103,161.73, 154,742.60 and 68,093.19 is: 102,139.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,161.73 : 154,742.60 = 68,093.19 : x
  2. Step 2: Convert to fraction form
    103,161.73/154,742.60 = 68,093.19/x
  3. Step 3: Cross multiply
    103,161.73x = 154,742.60 × 68,093.19
  4. Step 4: Simplify right side
    103,161.73x = 10,536,916,148.72
  5. Step 5: Solve for x
    x = 10,536,916,148.72/103,161.73
  6. Step 6: Final answer
    x = 102,139.78

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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.