Home / 206,765.05-310,190.78-66,537.85

Finding the Fourth Proportional to 206,765.05, 310,190.78 and 66,537.85

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Solution

The fourth proportional to 206,765.05, 310,190.78 and 66,537.85 is: 99,820.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,765.05 : 310,190.78 = 66,537.85 : x
  2. Step 2: Convert to fraction form
    206,765.05/310,190.78 = 66,537.85/x
  3. Step 3: Cross multiply
    206,765.05x = 310,190.78 × 66,537.85
  4. Step 4: Simplify right side
    206,765.05x = 20,639,427,258.33
  5. Step 5: Solve for x
    x = 20,639,427,258.33/206,765.05
  6. Step 6: Final answer
    x = 99,820.68

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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.