Home / 150,121.89-207,166.43-82,138.07

Finding the Fourth Proportional to 150,121.89, 207,166.43 and 82,138.07

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Solution

The fourth proportional to 150,121.89, 207,166.43 and 82,138.07 is: 113,349.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,121.89 : 207,166.43 = 82,138.07 : x
  2. Step 2: Convert to fraction form
    150,121.89/207,166.43 = 82,138.07/x
  3. Step 3: Cross multiply
    150,121.89x = 207,166.43 × 82,138.07
  4. Step 4: Simplify right side
    150,121.89x = 17,016,251,452.25
  5. Step 5: Solve for x
    x = 17,016,251,452.25/150,121.89
  6. Step 6: Final answer
    x = 113,349.57

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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.