Home / 198,161.12-297,059.88-85,770.56

Finding the Fourth Proportional to 198,161.12, 297,059.88 and 85,770.56

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Solution

The fourth proportional to 198,161.12, 297,059.88 and 85,770.56 is: 128,577.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,161.12 : 297,059.88 = 85,770.56 : x
  2. Step 2: Convert to fraction form
    198,161.12/297,059.88 = 85,770.56/x
  3. Step 3: Cross multiply
    198,161.12x = 297,059.88 × 85,770.56
  4. Step 4: Simplify right side
    198,161.12x = 25,478,992,261.13
  5. Step 5: Solve for x
    x = 25,478,992,261.13/198,161.12
  6. Step 6: Final answer
    x = 128,577.15

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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.