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Finding the Fourth Proportional to 163,398.33, 225,476.73 and 91,775.97

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Solution

The fourth proportional to 163,398.33, 225,476.73 and 91,775.97 is: 126,643.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,398.33 : 225,476.73 = 91,775.97 : x
  2. Step 2: Convert to fraction form
    163,398.33/225,476.73 = 91,775.97/x
  3. Step 3: Cross multiply
    163,398.33x = 225,476.73 × 91,775.97
  4. Step 4: Simplify right side
    163,398.33x = 20,693,345,608.18
  5. Step 5: Solve for x
    x = 20,693,345,608.18/163,398.33
  6. Step 6: Final answer
    x = 126,643.56

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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.