Home / 167,856.16-231,647.15-91,378.05

Finding the Fourth Proportional to 167,856.16, 231,647.15 and 91,378.05

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Solution

The fourth proportional to 167,856.16, 231,647.15 and 91,378.05 is: 126,104.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,856.16 : 231,647.15 = 91,378.05 : x
  2. Step 2: Convert to fraction form
    167,856.16/231,647.15 = 91,378.05/x
  3. Step 3: Cross multiply
    167,856.16x = 231,647.15 × 91,378.05
  4. Step 4: Simplify right side
    167,856.16x = 21,167,464,855.06
  5. Step 5: Solve for x
    x = 21,167,464,855.06/167,856.16
  6. Step 6: Final answer
    x = 126,104.78

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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.