Home / 140,261,975.22-193,561,788.51-78,382,313.79

Finding the Fourth Proportional to 140,261,975.22, 193,561,788.51 and 78,382,313.79

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Solution

The fourth proportional to 140,261,975.22, 193,561,788.51 and 78,382,313.79 is: 108,167,739.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,261,975.22 : 193,561,788.51 = 78,382,313.79 : x
  2. Step 2: Convert to fraction form
    140,261,975.22/193,561,788.51 = 78,382,313.79/x
  3. Step 3: Cross multiply
    140,261,975.22x = 193,561,788.51 × 78,382,313.79
  4. Step 4: Simplify right side
    140,261,975.22x = 15,171,820,844,018,578
  5. Step 5: Solve for x
    x = 15,171,820,844,018,578/140,261,975.22
  6. Step 6: Final answer
    x = 108,167,739.83

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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.