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Finding the Fourth Proportional to 103,179.96, 142,418.76 and 67,375.56

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Solution

The fourth proportional to 103,179.96, 142,418.76 and 67,375.56 is: 92,998.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,179.96 : 142,418.76 = 67,375.56 : x
  2. Step 2: Convert to fraction form
    103,179.96/142,418.76 = 67,375.56/x
  3. Step 3: Cross multiply
    103,179.96x = 142,418.76 × 67,375.56
  4. Step 4: Simplify right side
    103,179.96x = 9,595,543,709.51
  5. Step 5: Solve for x
    x = 9,595,543,709.51/103,179.96
  6. Step 6: Final answer
    x = 92,998.13

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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.