Home / 214,109.80-321,040.22-81,000.48

Finding the Fourth Proportional to 214,109.80, 321,040.22 and 81,000.48

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Solution

The fourth proportional to 214,109.80, 321,040.22 and 81,000.48 is: 121,453.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,109.80 : 321,040.22 = 81,000.48 : x
  2. Step 2: Convert to fraction form
    214,109.80/321,040.22 = 81,000.48/x
  3. Step 3: Cross multiply
    214,109.80x = 321,040.22 × 81,000.48
  4. Step 4: Simplify right side
    214,109.80x = 26,004,411,919.31
  5. Step 5: Solve for x
    x = 26,004,411,919.31/214,109.80
  6. Step 6: Final answer
    x = 121,453.63

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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.