Home / 167,689.08-231,412.38-91,208.78

Finding the Fourth Proportional to 167,689.08, 231,412.38 and 91,208.78

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Solution

The fourth proportional to 167,689.08, 231,412.38 and 91,208.78 is: 125,868.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,689.08 : 231,412.38 = 91,208.78 : x
  2. Step 2: Convert to fraction form
    167,689.08/231,412.38 = 91,208.78/x
  3. Step 3: Cross multiply
    167,689.08x = 231,412.38 × 91,208.78
  4. Step 4: Simplify right side
    167,689.08x = 21,106,840,856.70
  5. Step 5: Solve for x
    x = 21,106,840,856.70/167,689.08
  6. Step 6: Final answer
    x = 125,868.90

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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.