Home / 149,747.30-206,651.98-81,765.64

Finding the Fourth Proportional to 149,747.30, 206,651.98 and 81,765.64

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Solution

The fourth proportional to 149,747.30, 206,651.98 and 81,765.64 is: 112,836.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,747.30 : 206,651.98 = 81,765.64 : x
  2. Step 2: Convert to fraction form
    149,747.30/206,651.98 = 81,765.64/x
  3. Step 3: Cross multiply
    149,747.30x = 206,651.98 × 81,765.64
  4. Step 4: Simplify right side
    149,747.30x = 16,897,031,401.97
  5. Step 5: Solve for x
    x = 16,897,031,401.97/149,747.30
  6. Step 6: Final answer
    x = 112,836.97

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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.