Home / 126,278,417.52-172,998,537.06-121,557,211.65

Finding the Fourth Proportional to 126,278,417.52, 172,998,537.06 and 121,557,211.65

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Solution

The fourth proportional to 126,278,417.52, 172,998,537.06 and 121,557,211.65 is: 166,530,593.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,278,417.52 : 172,998,537.06 = 121,557,211.65 : x
  2. Step 2: Convert to fraction form
    126,278,417.52/172,998,537.06 = 121,557,211.65/x
  3. Step 3: Cross multiply
    126,278,417.52x = 172,998,537.06 × 121,557,211.65
  4. Step 4: Simplify right side
    126,278,417.52x = 21,029,219,784,542,792
  5. Step 5: Solve for x
    x = 21,029,219,784,542,792/126,278,417.52
  6. Step 6: Final answer
    x = 166,530,593.25

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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.