Home / 121,436.29-167,524.92-78,979.33

Finding the Fourth Proportional to 121,436.29, 167,524.92 and 78,979.33

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Solution

The fourth proportional to 121,436.29, 167,524.92 and 78,979.33 is: 108,954.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,436.29 : 167,524.92 = 78,979.33 : x
  2. Step 2: Convert to fraction form
    121,436.29/167,524.92 = 78,979.33/x
  3. Step 3: Cross multiply
    121,436.29x = 167,524.92 × 78,979.33
  4. Step 4: Simplify right side
    121,436.29x = 13,231,005,939.90
  5. Step 5: Solve for x
    x = 13,231,005,939.90/121,436.29
  6. Step 6: Final answer
    x = 108,954.30

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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.