Home / 198,721.40-298,082.10-65,622.20

Finding the Fourth Proportional to 198,721.40, 298,082.10 and 65,622.20

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Solution

The fourth proportional to 198,721.40, 298,082.10 and 65,622.20 is: 98,433.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,721.40 : 298,082.10 = 65,622.20 : x
  2. Step 2: Convert to fraction form
    198,721.40/298,082.10 = 65,622.20/x
  3. Step 3: Cross multiply
    198,721.40x = 298,082.10 × 65,622.20
  4. Step 4: Simplify right side
    198,721.40x = 19,560,803,182.62
  5. Step 5: Solve for x
    x = 19,560,803,182.62/198,721.40
  6. Step 6: Final answer
    x = 98,433.30

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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.