Home / 214,521.62-321,736.86-81,355.19

Finding the Fourth Proportional to 214,521.62, 321,736.86 and 81,355.19

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Solution

The fourth proportional to 214,521.62, 321,736.86 and 81,355.19 is: 122,015.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,521.62 : 321,736.86 = 81,355.19 : x
  2. Step 2: Convert to fraction form
    214,521.62/321,736.86 = 81,355.19/x
  3. Step 3: Cross multiply
    214,521.62x = 321,736.86 × 81,355.19
  4. Step 4: Simplify right side
    214,521.62x = 26,174,961,766.62
  5. Step 5: Solve for x
    x = 26,174,961,766.62/214,521.62
  6. Step 6: Final answer
    x = 122,015.50

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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.