Home / 123,729.24-185,331.20-83,772.75

Finding the Fourth Proportional to 123,729.24, 185,331.20 and 83,772.75

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Solution

The fourth proportional to 123,729.24, 185,331.20 and 83,772.75 is: 125,481.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,729.24 : 185,331.20 = 83,772.75 : x
  2. Step 2: Convert to fraction form
    123,729.24/185,331.20 = 83,772.75/x
  3. Step 3: Cross multiply
    123,729.24x = 185,331.20 × 83,772.75
  4. Step 4: Simplify right side
    123,729.24x = 15,525,703,865.94
  5. Step 5: Solve for x
    x = 15,525,703,865.94/123,729.24
  6. Step 6: Final answer
    x = 125,481.28

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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.