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Finding the Fourth Proportional to 161,696.97, 223,148.55 and 90,076.97

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Solution

The fourth proportional to 161,696.97, 223,148.55 and 90,076.97 is: 124,309.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,696.97 : 223,148.55 = 90,076.97 : x
  2. Step 2: Convert to fraction form
    161,696.97/223,148.55 = 90,076.97/x
  3. Step 3: Cross multiply
    161,696.97x = 223,148.55 × 90,076.97
  4. Step 4: Simplify right side
    161,696.97x = 20,100,544,128.15
  5. Step 5: Solve for x
    x = 20,100,544,128.15/161,696.97
  6. Step 6: Final answer
    x = 124,309.96

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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.