Home / 198,947.10-298,473.45-86,579.10

Finding the Fourth Proportional to 198,947.10, 298,473.45 and 86,579.10

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Solution

The fourth proportional to 198,947.10, 298,473.45 and 86,579.10 is: 129,891.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,947.10 : 298,473.45 = 86,579.10 : x
  2. Step 2: Convert to fraction form
    198,947.10/298,473.45 = 86,579.10/x
  3. Step 3: Cross multiply
    198,947.10x = 298,473.45 × 86,579.10
  4. Step 4: Simplify right side
    198,947.10x = 25,841,562,674.90
  5. Step 5: Solve for x
    x = 25,841,562,674.90/198,947.10
  6. Step 6: Final answer
    x = 129,891.63

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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.