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Finding the Fourth Proportional to 161,070.80, 222,388.88 and 100,668.56

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Solution

The fourth proportional to 161,070.80, 222,388.88 and 100,668.56 is: 138,992.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,070.80 : 222,388.88 = 100,668.56 : x
  2. Step 2: Convert to fraction form
    161,070.80/222,388.88 = 100,668.56/x
  3. Step 3: Cross multiply
    161,070.80x = 222,388.88 × 100,668.56
  4. Step 4: Simplify right side
    161,070.80x = 22,387,566,694.33
  5. Step 5: Solve for x
    x = 22,387,566,694.33/161,070.80
  6. Step 6: Final answer
    x = 138,992.09

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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.