Home / 165,721.12-228,694.80-90,269.44

Finding the Fourth Proportional to 165,721.12, 228,694.80 and 90,269.44

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Solution

The fourth proportional to 165,721.12, 228,694.80 and 90,269.44 is: 124,571.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,721.12 : 228,694.80 = 90,269.44 : x
  2. Step 2: Convert to fraction form
    165,721.12/228,694.80 = 90,269.44/x
  3. Step 3: Cross multiply
    165,721.12x = 228,694.80 × 90,269.44
  4. Step 4: Simplify right side
    165,721.12x = 20,644,151,526.91
  5. Step 5: Solve for x
    x = 20,644,151,526.91/165,721.12
  6. Step 6: Final answer
    x = 124,571.64

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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.