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Finding the Fourth Proportional to 70,770.15, 106,155.22 and 18,179.68

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Solution

The fourth proportional to 70,770.15, 106,155.22 and 18,179.68 is: 27,269.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,770.15 : 106,155.22 = 18,179.68 : x
  2. Step 2: Convert to fraction form
    70,770.15/106,155.22 = 18,179.68/x
  3. Step 3: Cross multiply
    70,770.15x = 106,155.22 × 18,179.68
  4. Step 4: Simplify right side
    70,770.15x = 1,929,867,929.93
  5. Step 5: Solve for x
    x = 1,929,867,929.93/70,770.15
  6. Step 6: Final answer
    x = 27,269.52

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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.