Home / 149,771.76-206,685.39-81,789.27

Finding the Fourth Proportional to 149,771.76, 206,685.39 and 81,789.27

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Solution

The fourth proportional to 149,771.76, 206,685.39 and 81,789.27 is: 112,869.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,771.76 : 206,685.39 = 81,789.27 : x
  2. Step 2: Convert to fraction form
    149,771.76/206,685.39 = 81,789.27/x
  3. Step 3: Cross multiply
    149,771.76x = 206,685.39 × 81,789.27
  4. Step 4: Simplify right side
    149,771.76x = 16,904,647,167.77
  5. Step 5: Solve for x
    x = 16,904,647,167.77/149,771.76
  6. Step 6: Final answer
    x = 112,869.39

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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.