Home / 168,039.71-231,821.94-100,018.55

Finding the Fourth Proportional to 168,039.71, 231,821.94 and 100,018.55

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Solution

The fourth proportional to 168,039.71, 231,821.94 and 100,018.55 is: 137,982.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,039.71 : 231,821.94 = 100,018.55 : x
  2. Step 2: Convert to fraction form
    168,039.71/231,821.94 = 100,018.55/x
  3. Step 3: Cross multiply
    168,039.71x = 231,821.94 × 100,018.55
  4. Step 4: Simplify right side
    168,039.71x = 23,186,493,137.88
  5. Step 5: Solve for x
    x = 23,186,493,137.88/168,039.71
  6. Step 6: Final answer
    x = 137,982.23

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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.