Home / 214,202.78-321,349.28-81,080.09

Finding the Fourth Proportional to 214,202.78, 321,349.28 and 81,080.09

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Solution

The fourth proportional to 214,202.78, 321,349.28 and 81,080.09 is: 121,637.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,202.78 : 321,349.28 = 81,080.09 : x
  2. Step 2: Convert to fraction form
    214,202.78/321,349.28 = 81,080.09/x
  3. Step 3: Cross multiply
    214,202.78x = 321,349.28 × 81,080.09
  4. Step 4: Simplify right side
    214,202.78x = 26,055,027,736.75
  5. Step 5: Solve for x
    x = 26,055,027,736.75/214,202.78
  6. Step 6: Final answer
    x = 121,637.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.