Home / 198,120.79-297,190.91-79,776.15

Finding the Fourth Proportional to 198,120.79, 297,190.91 and 79,776.15

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Solution

The fourth proportional to 198,120.79, 297,190.91 and 79,776.15 is: 119,668.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,120.79 : 297,190.91 = 79,776.15 : x
  2. Step 2: Convert to fraction form
    198,120.79/297,190.91 = 79,776.15/x
  3. Step 3: Cross multiply
    198,120.79x = 297,190.91 × 79,776.15
  4. Step 4: Simplify right side
    198,120.79x = 23,708,746,614.80
  5. Step 5: Solve for x
    x = 23,708,746,614.80/198,120.79
  6. Step 6: Final answer
    x = 119,668.14

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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.