Home / 189,191.20-261,114.96-113,781.28

Finding the Fourth Proportional to 189,191.20, 261,114.96 and 113,781.28

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Solution

The fourth proportional to 189,191.20, 261,114.96 and 113,781.28 is: 157,036.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,191.20 : 261,114.96 = 113,781.28 : x
  2. Step 2: Convert to fraction form
    189,191.20/261,114.96 = 113,781.28/x
  3. Step 3: Cross multiply
    189,191.20x = 261,114.96 × 113,781.28
  4. Step 4: Simplify right side
    189,191.20x = 29,709,994,375.95
  5. Step 5: Solve for x
    x = 29,709,994,375.95/189,191.20
  6. Step 6: Final answer
    x = 157,036.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.