Home / 161,981.45-223,540.49-90,375.32

Finding the Fourth Proportional to 161,981.45, 223,540.49 and 90,375.32

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Solution

The fourth proportional to 161,981.45, 223,540.49 and 90,375.32 is: 124,721.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,981.45 : 223,540.49 = 90,375.32 : x
  2. Step 2: Convert to fraction form
    161,981.45/223,540.49 = 90,375.32/x
  3. Step 3: Cross multiply
    161,981.45x = 223,540.49 × 90,375.32
  4. Step 4: Simplify right side
    161,981.45x = 20,202,541,747.13
  5. Step 5: Solve for x
    x = 20,202,541,747.13/161,981.45
  6. Step 6: Final answer
    x = 124,721.33

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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.