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Finding the Fourth Proportional to 198,081.55, 297,209.81 and 79,983.55

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Solution

The fourth proportional to 198,081.55, 297,209.81 and 79,983.55 is: 120,010.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,081.55 : 297,209.81 = 79,983.55 : x
  2. Step 2: Convert to fraction form
    198,081.55/297,209.81 = 79,983.55/x
  3. Step 3: Cross multiply
    198,081.55x = 297,209.81 × 79,983.55
  4. Step 4: Simplify right side
    198,081.55x = 23,771,895,698.63
  5. Step 5: Solve for x
    x = 23,771,895,698.63/198,081.55
  6. Step 6: Final answer
    x = 120,010.65

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1.5x scale

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.