Home / 214,135.89-321,206.06-86,111.42

Finding the Fourth Proportional to 214,135.89, 321,206.06 and 86,111.42

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Solution

The fourth proportional to 214,135.89, 321,206.06 and 86,111.42 is: 129,168.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,135.89 : 321,206.06 = 86,111.42 : x
  2. Step 2: Convert to fraction form
    214,135.89/321,206.06 = 86,111.42/x
  3. Step 3: Cross multiply
    214,135.89x = 321,206.06 × 86,111.42
  4. Step 4: Simplify right side
    214,135.89x = 27,659,508,515.77
  5. Step 5: Solve for x
    x = 27,659,508,515.77/214,135.89
  6. Step 6: Final answer
    x = 129,168.02

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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.