Home / 198,591.04-297,718.89-86,186.26

Finding the Fourth Proportional to 198,591.04, 297,718.89 and 86,186.26

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Solution

The fourth proportional to 198,591.04, 297,718.89 and 86,186.26 is: 129,206.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,591.04 : 297,718.89 = 86,186.26 : x
  2. Step 2: Convert to fraction form
    198,591.04/297,718.89 = 86,186.26/x
  3. Step 3: Cross multiply
    198,591.04x = 297,718.89 × 86,186.26
  4. Step 4: Simplify right side
    198,591.04x = 25,659,277,660.45
  5. Step 5: Solve for x
    x = 25,659,277,660.45/198,591.04
  6. Step 6: Final answer
    x = 129,206.62

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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.