Home / 214,102.56-321,198.93-80,979.90

Finding the Fourth Proportional to 214,102.56, 321,198.93 and 80,979.90

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Solution

The fourth proportional to 214,102.56, 321,198.93 and 80,979.90 is: 121,486.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,102.56 : 321,198.93 = 80,979.90 : x
  2. Step 2: Convert to fraction form
    214,102.56/321,198.93 = 80,979.90/x
  3. Step 3: Cross multiply
    214,102.56x = 321,198.93 × 80,979.90
  4. Step 4: Simplify right side
    214,102.56x = 26,010,657,231.51
  5. Step 5: Solve for x
    x = 26,010,657,231.51/214,102.56
  6. Step 6: Final answer
    x = 121,486.90

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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.