Home / 121,033.20-181,331.10-98,725.80

Finding the Fourth Proportional to 121,033.20, 181,331.10 and 98,725.80

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Solution

The fourth proportional to 121,033.20, 181,331.10 and 98,725.80 is: 147,910.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,033.20 : 181,331.10 = 98,725.80 : x
  2. Step 2: Convert to fraction form
    121,033.20/181,331.10 = 98,725.80/x
  3. Step 3: Cross multiply
    121,033.20x = 181,331.10 × 98,725.80
  4. Step 4: Simplify right side
    121,033.20x = 17,902,057,912.38
  5. Step 5: Solve for x
    x = 17,902,057,912.38/121,033.20
  6. Step 6: Final answer
    x = 147,910.31

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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.