Home / 220,916.25-331,171.89-86,071.29

Finding the Fourth Proportional to 220,916.25, 331,171.89 and 86,071.29

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Solution

The fourth proportional to 220,916.25, 331,171.89 and 86,071.29 is: 129,028.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,916.25 : 331,171.89 = 86,071.29 : x
  2. Step 2: Convert to fraction form
    220,916.25/331,171.89 = 86,071.29/x
  3. Step 3: Cross multiply
    220,916.25x = 331,171.89 × 86,071.29
  4. Step 4: Simplify right side
    220,916.25x = 28,504,391,784.04
  5. Step 5: Solve for x
    x = 28,504,391,784.04/220,916.25
  6. Step 6: Final answer
    x = 129,028.04

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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.