Home / 214,188.66-321,286.32-81,131.58

Finding the Fourth Proportional to 214,188.66, 321,286.32 and 81,131.58

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Solution

The fourth proportional to 214,188.66, 321,286.32 and 81,131.58 is: 121,698.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,188.66 : 321,286.32 = 81,131.58 : x
  2. Step 2: Convert to fraction form
    214,188.66/321,286.32 = 81,131.58/x
  3. Step 3: Cross multiply
    214,188.66x = 321,286.32 × 81,131.58
  4. Step 4: Simplify right side
    214,188.66x = 26,066,466,773.99
  5. Step 5: Solve for x
    x = 26,066,466,773.99/214,188.66
  6. Step 6: Final answer
    x = 121,698.63

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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.