Home / 198,121.32-297,211.32-71,771.04

Finding the Fourth Proportional to 198,121.32, 297,211.32 and 71,771.04

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Solution

The fourth proportional to 198,121.32, 297,211.32 and 71,771.04 is: 107,667.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,121.32 : 297,211.32 = 71,771.04 : x
  2. Step 2: Convert to fraction form
    198,121.32/297,211.32 = 71,771.04/x
  3. Step 3: Cross multiply
    198,121.32x = 297,211.32 × 71,771.04
  4. Step 4: Simplify right side
    198,121.32x = 21,331,165,536.17
  5. Step 5: Solve for x
    x = 21,331,165,536.17/198,121.32
  6. Step 6: Final answer
    x = 107,667.19

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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.