Home / 214,136.89-321,207.56-86,112.42

Finding the Fourth Proportional to 214,136.89, 321,207.56 and 86,112.42

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Solution

The fourth proportional to 214,136.89, 321,207.56 and 86,112.42 is: 129,169.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,136.89 : 321,207.56 = 86,112.42 : x
  2. Step 2: Convert to fraction form
    214,136.89/321,207.56 = 86,112.42/x
  3. Step 3: Cross multiply
    214,136.89x = 321,207.56 × 86,112.42
  4. Step 4: Simplify right side
    214,136.89x = 27,659,960,313.90
  5. Step 5: Solve for x
    x = 27,659,960,313.90/214,136.89
  6. Step 6: Final answer
    x = 129,169.52

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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.