Home / 159,839.60-220,579.09-87,243.14

Finding the Fourth Proportional to 159,839.60, 220,579.09 and 87,243.14

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Solution

The fourth proportional to 159,839.60, 220,579.09 and 87,243.14 is: 120,395.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,839.60 : 220,579.09 = 87,243.14 : x
  2. Step 2: Convert to fraction form
    159,839.60/220,579.09 = 87,243.14/x
  3. Step 3: Cross multiply
    159,839.60x = 220,579.09 × 87,243.14
  4. Step 4: Simplify right side
    159,839.60x = 19,244,012,763.28
  5. Step 5: Solve for x
    x = 19,244,012,763.28/159,839.60
  6. Step 6: Final answer
    x = 120,395.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.