Home / 201,816.72-302,721.82-68,789.60

Finding the Fourth Proportional to 201,816.72, 302,721.82 and 68,789.60

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Solution

The fourth proportional to 201,816.72, 302,721.82 and 68,789.60 is: 103,183.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,816.72 : 302,721.82 = 68,789.60 : x
  2. Step 2: Convert to fraction form
    201,816.72/302,721.82 = 68,789.60/x
  3. Step 3: Cross multiply
    201,816.72x = 302,721.82 × 68,789.60
  4. Step 4: Simplify right side
    201,816.72x = 20,824,112,909.07
  5. Step 5: Solve for x
    x = 20,824,112,909.07/201,816.72
  6. Step 6: Final answer
    x = 103,183.29

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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.