Home / 218,776.82-301,910.22-121,979.52

Finding the Fourth Proportional to 218,776.82, 301,910.22 and 121,979.52

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Solution

The fourth proportional to 218,776.82, 301,910.22 and 121,979.52 is: 168,330.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,776.82 : 301,910.22 = 121,979.52 : x
  2. Step 2: Convert to fraction form
    218,776.82/301,910.22 = 121,979.52/x
  3. Step 3: Cross multiply
    218,776.82x = 301,910.22 × 121,979.52
  4. Step 4: Simplify right side
    218,776.82x = 36,826,863,718.69
  5. Step 5: Solve for x
    x = 36,826,863,718.69/218,776.82
  6. Step 6: Final answer
    x = 168,330.74

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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.