Home / 214,272.21-321,414.39-81,127.65

Finding the Fourth Proportional to 214,272.21, 321,414.39 and 81,127.65

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Solution

The fourth proportional to 214,272.21, 321,414.39 and 81,127.65 is: 121,693.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,272.21 : 321,414.39 = 81,127.65 : x
  2. Step 2: Convert to fraction form
    214,272.21/321,414.39 = 81,127.65/x
  3. Step 3: Cross multiply
    214,272.21x = 321,414.39 × 81,127.65
  4. Step 4: Simplify right side
    214,272.21x = 26,075,594,136.88
  5. Step 5: Solve for x
    x = 26,075,594,136.88/214,272.21
  6. Step 6: Final answer
    x = 121,693.78

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1.5x scale

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.