Home / 74,132.20-111,198.30-71,507.80

Finding the Fourth Proportional to 74,132.20, 111,198.30 and 71,507.80

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Solution

The fourth proportional to 74,132.20, 111,198.30 and 71,507.80 is: 107,261.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,132.20 : 111,198.30 = 71,507.80 : x
  2. Step 2: Convert to fraction form
    74,132.20/111,198.30 = 71,507.80/x
  3. Step 3: Cross multiply
    74,132.20x = 111,198.30 × 71,507.80
  4. Step 4: Simplify right side
    74,132.20x = 7,951,545,796.74
  5. Step 5: Solve for x
    x = 7,951,545,796.74/74,132.20
  6. Step 6: Final answer
    x = 107,261.70

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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.