Home / 155,786.22-214,991.25-87,806.03

Finding the Fourth Proportional to 155,786.22, 214,991.25 and 87,806.03

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Solution

The fourth proportional to 155,786.22, 214,991.25 and 87,806.03 is: 121,175.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,786.22 : 214,991.25 = 87,806.03 : x
  2. Step 2: Convert to fraction form
    155,786.22/214,991.25 = 87,806.03/x
  3. Step 3: Cross multiply
    155,786.22x = 214,991.25 × 87,806.03
  4. Step 4: Simplify right side
    155,786.22x = 18,877,526,743.01
  5. Step 5: Solve for x
    x = 18,877,526,743.01/155,786.22
  6. Step 6: Final answer
    x = 121,175.84

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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.