Home / 100,766.05-138,999.38-62,974.69

Finding the Fourth Proportional to 100,766.05, 138,999.38 and 62,974.69

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Solution

The fourth proportional to 100,766.05, 138,999.38 and 62,974.69 is: 86,868.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,766.05 : 138,999.38 = 62,974.69 : x
  2. Step 2: Convert to fraction form
    100,766.05/138,999.38 = 62,974.69/x
  3. Step 3: Cross multiply
    100,766.05x = 138,999.38 × 62,974.69
  4. Step 4: Simplify right side
    100,766.05x = 8,753,442,675.63
  5. Step 5: Solve for x
    x = 8,753,442,675.63/100,766.05
  6. Step 6: Final answer
    x = 86,868.97

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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.