Home / 117,190.75-161,726.37-71,842.60

Finding the Fourth Proportional to 117,190.75, 161,726.37 and 71,842.60

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Solution

The fourth proportional to 117,190.75, 161,726.37 and 71,842.60 is: 99,144.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,190.75 : 161,726.37 = 71,842.60 : x
  2. Step 2: Convert to fraction form
    117,190.75/161,726.37 = 71,842.60/x
  3. Step 3: Cross multiply
    117,190.75x = 161,726.37 × 71,842.60
  4. Step 4: Simplify right side
    117,190.75x = 11,618,842,909.36
  5. Step 5: Solve for x
    x = 11,618,842,909.36/117,190.75
  6. Step 6: Final answer
    x = 99,144.71

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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.