Home / 115,754.20-159,771.99-68,039.53

Finding the Fourth Proportional to 115,754.20, 159,771.99 and 68,039.53

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Solution

The fourth proportional to 115,754.20, 159,771.99 and 68,039.53 is: 93,912.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,754.20 : 159,771.99 = 68,039.53 : x
  2. Step 2: Convert to fraction form
    115,754.20/159,771.99 = 68,039.53/x
  3. Step 3: Cross multiply
    115,754.20x = 159,771.99 × 68,039.53
  4. Step 4: Simplify right side
    115,754.20x = 10,870,810,962.48
  5. Step 5: Solve for x
    x = 10,870,810,962.48/115,754.20
  6. Step 6: Final answer
    x = 93,912.89

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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.