Home / 126,278,418.52-172,998,538.43-121,557,212.65

Finding the Fourth Proportional to 126,278,418.52, 172,998,538.43 and 121,557,212.65

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Solution

The fourth proportional to 126,278,418.52, 172,998,538.43 and 121,557,212.65 is: 166,530,594.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,278,418.52 : 172,998,538.43 = 121,557,212.65 : x
  2. Step 2: Convert to fraction form
    126,278,418.52/172,998,538.43 = 121,557,212.65/x
  3. Step 3: Cross multiply
    126,278,418.52x = 172,998,538.43 × 121,557,212.65
  4. Step 4: Simplify right side
    126,278,418.52x = 21,029,220,124,074,708
  5. Step 5: Solve for x
    x = 21,029,220,124,074,708/126,278,418.52
  6. Step 6: Final answer
    x = 166,530,594.62

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.