Home / 100,448.43-138,608.73-60,161.13

Finding the Fourth Proportional to 100,448.43, 138,608.73 and 60,161.13

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Solution

The fourth proportional to 100,448.43, 138,608.73 and 60,161.13 is: 83,016.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,448.43 : 138,608.73 = 60,161.13 : x
  2. Step 2: Convert to fraction form
    100,448.43/138,608.73 = 60,161.13/x
  3. Step 3: Cross multiply
    100,448.43x = 138,608.73 × 60,161.13
  4. Step 4: Simplify right side
    100,448.43x = 8,338,857,824.66
  5. Step 5: Solve for x
    x = 8,338,857,824.66/100,448.43
  6. Step 6: Final answer
    x = 83,016.31

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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.