Home / 214,511.48-321,851.87-81,427.07

Finding the Fourth Proportional to 214,511.48, 321,851.87 and 81,427.07

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Solution

The fourth proportional to 214,511.48, 321,851.87 and 81,427.07 is: 122,172.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,511.48 : 321,851.87 = 81,427.07 : x
  2. Step 2: Convert to fraction form
    214,511.48/321,851.87 = 81,427.07/x
  3. Step 3: Cross multiply
    214,511.48x = 321,851.87 × 81,427.07
  4. Step 4: Simplify right side
    214,511.48x = 26,207,453,342.43
  5. Step 5: Solve for x
    x = 26,207,453,342.43/214,511.48
  6. Step 6: Final answer
    x = 122,172.73

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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.