Home / 157,448,076.35-217,321,561.77-91,389,856.51

Finding the Fourth Proportional to 157,448,076.35, 217,321,561.77 and 91,389,856.51

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Solution

The fourth proportional to 157,448,076.35, 217,321,561.77 and 91,389,856.51 is: 126,143,086.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,448,076.35 : 217,321,561.77 = 91,389,856.51 : x
  2. Step 2: Convert to fraction form
    157,448,076.35/217,321,561.77 = 91,389,856.51/x
  3. Step 3: Cross multiply
    157,448,076.35x = 217,321,561.77 × 91,389,856.51
  4. Step 4: Simplify right side
    157,448,076.35x = 19,860,986,346,618,344
  5. Step 5: Solve for x
    x = 19,860,986,346,618,344/157,448,076.35
  6. Step 6: Final answer
    x = 126,143,086.71

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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.