Home / 198,721.40-297,979.70-73,998.20

Finding the Fourth Proportional to 198,721.40, 297,979.70 and 73,998.20

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Solution

The fourth proportional to 198,721.40, 297,979.70 and 73,998.20 is: 110,959.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,721.40 : 297,979.70 = 73,998.20 : x
  2. Step 2: Convert to fraction form
    198,721.40/297,979.70 = 73,998.20/x
  3. Step 3: Cross multiply
    198,721.40x = 297,979.70 × 73,998.20
  4. Step 4: Simplify right side
    198,721.40x = 22,049,961,436.54
  5. Step 5: Solve for x
    x = 22,049,961,436.54/198,721.40
  6. Step 6: Final answer
    x = 110,959.17

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1.5x scale

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.