Home / 149,743.91-206,654.98-81,767.21

Finding the Fourth Proportional to 149,743.91, 206,654.98 and 81,767.21

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Solution

The fourth proportional to 149,743.91, 206,654.98 and 81,767.21 is: 112,843.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,743.91 : 206,654.98 = 81,767.21 : x
  2. Step 2: Convert to fraction form
    149,743.91/206,654.98 = 81,767.21/x
  3. Step 3: Cross multiply
    149,743.91x = 206,654.98 × 81,767.21
  4. Step 4: Simplify right side
    149,743.91x = 16,897,601,459.43
  5. Step 5: Solve for x
    x = 16,897,601,459.43/149,743.91
  6. Step 6: Final answer
    x = 112,843.33

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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.