Home / 198,721.66-298,162.14-72,370.70

Finding the Fourth Proportional to 198,721.66, 298,162.14 and 72,370.70

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Solution

The fourth proportional to 198,721.66, 298,162.14 and 72,370.70 is: 108,585.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,721.66 : 298,162.14 = 72,370.70 : x
  2. Step 2: Convert to fraction form
    198,721.66/298,162.14 = 72,370.70/x
  3. Step 3: Cross multiply
    198,721.66x = 298,162.14 × 72,370.70
  4. Step 4: Simplify right side
    198,721.66x = 21,578,203,259.31
  5. Step 5: Solve for x
    x = 21,578,203,259.31/198,721.66
  6. Step 6: Final answer
    x = 108,585.06

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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.