Home / 214,505.09-321,631.46-81,394.70

Finding the Fourth Proportional to 214,505.09, 321,631.46 and 81,394.70

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Solution

The fourth proportional to 214,505.09, 321,631.46 and 81,394.70 is: 122,044.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,505.09 : 321,631.46 = 81,394.70 : x
  2. Step 2: Convert to fraction form
    214,505.09/321,631.46 = 81,394.70/x
  3. Step 3: Cross multiply
    214,505.09x = 321,631.46 × 81,394.70
  4. Step 4: Simplify right side
    214,505.09x = 26,179,096,197.26
  5. Step 5: Solve for x
    x = 26,179,096,197.26/214,505.09
  6. Step 6: Final answer
    x = 122,044.17

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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.