Home / 121,853.97-168,174.23-79,535.52

Finding the Fourth Proportional to 121,853.97, 168,174.23 and 79,535.52

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Solution

The fourth proportional to 121,853.97, 168,174.23 and 79,535.52 is: 109,769.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,853.97 : 168,174.23 = 79,535.52 : x
  2. Step 2: Convert to fraction form
    121,853.97/168,174.23 = 79,535.52/x
  3. Step 3: Cross multiply
    121,853.97x = 168,174.23 × 79,535.52
  4. Step 4: Simplify right side
    121,853.97x = 13,375,824,435.97
  5. Step 5: Solve for x
    x = 13,375,824,435.97/121,853.97
  6. Step 6: Final answer
    x = 109,769.30

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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.