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Finding the Fourth Proportional to 198,080.55, 297,208.31 and 79,982.55

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Solution

The fourth proportional to 198,080.55, 297,208.31 and 79,982.55 is: 120,009.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,080.55 : 297,208.31 = 79,982.55 : x
  2. Step 2: Convert to fraction form
    198,080.55/297,208.31 = 79,982.55/x
  3. Step 3: Cross multiply
    198,080.55x = 297,208.31 × 79,982.55
  4. Step 4: Simplify right side
    198,080.55x = 23,771,478,115.08
  5. Step 5: Solve for x
    x = 23,771,478,115.08/198,080.55
  6. Step 6: Final answer
    x = 120,009.15

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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.