Home / 198,721.90-298,082.85-65,622.70

Finding the Fourth Proportional to 198,721.90, 298,082.85 and 65,622.70

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Solution

The fourth proportional to 198,721.90, 298,082.85 and 65,622.70 is: 98,434.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,721.90 : 298,082.85 = 65,622.70 : x
  2. Step 2: Convert to fraction form
    198,721.90/298,082.85 = 65,622.70/x
  3. Step 3: Cross multiply
    198,721.90x = 298,082.85 × 65,622.70
  4. Step 4: Simplify right side
    198,721.90x = 19,561,001,440.70
  5. Step 5: Solve for x
    x = 19,561,001,440.70/198,721.90
  6. Step 6: Final answer
    x = 98,434.05

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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.