Home / 74,172.92-111,067.40-67,429.96

Finding the Fourth Proportional to 74,172.92, 111,067.40 and 67,429.96

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Solution

The fourth proportional to 74,172.92, 111,067.40 and 67,429.96 is: 100,970.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,172.92 : 111,067.40 = 67,429.96 : x
  2. Step 2: Convert to fraction form
    74,172.92/111,067.40 = 67,429.96/x
  3. Step 3: Cross multiply
    74,172.92x = 111,067.40 × 67,429.96
  4. Step 4: Simplify right side
    74,172.92x = 7,489,270,339.30
  5. Step 5: Solve for x
    x = 7,489,270,339.30/74,172.92
  6. Step 6: Final answer
    x = 100,970.41

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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.