Home / 220,954.60-331,475.10-87,812.20

Finding the Fourth Proportional to 220,954.60, 331,475.10 and 87,812.20

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Solution

The fourth proportional to 220,954.60, 331,475.10 and 87,812.20 is: 131,735.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,954.60 : 331,475.10 = 87,812.20 : x
  2. Step 2: Convert to fraction form
    220,954.60/331,475.10 = 87,812.20/x
  3. Step 3: Cross multiply
    220,954.60x = 331,475.10 × 87,812.20
  4. Step 4: Simplify right side
    220,954.60x = 29,107,557,776.22
  5. Step 5: Solve for x
    x = 29,107,557,776.22/220,954.60
  6. Step 6: Final answer
    x = 131,735.47

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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.