Home / 270,723.12-406,176.96-81,188.12

Finding the Fourth Proportional to 270,723.12, 406,176.96 and 81,188.12

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Solution

The fourth proportional to 270,723.12, 406,176.96 and 81,188.12 is: 121,809.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,723.12 : 406,176.96 = 81,188.12 : x
  2. Step 2: Convert to fraction form
    270,723.12/406,176.96 = 81,188.12/x
  3. Step 3: Cross multiply
    270,723.12x = 406,176.96 × 81,188.12
  4. Step 4: Simplify right side
    270,723.12x = 32,976,741,738.83
  5. Step 5: Solve for x
    x = 32,976,741,738.83/270,723.12
  6. Step 6: Final answer
    x = 121,809.85

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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.