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Finding the Fourth Proportional to 223,112.52, 307,893.58 and 121,135.97

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Solution

The fourth proportional to 223,112.52, 307,893.58 and 121,135.97 is: 167,166.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,112.52 : 307,893.58 = 121,135.97 : x
  2. Step 2: Convert to fraction form
    223,112.52/307,893.58 = 121,135.97/x
  3. Step 3: Cross multiply
    223,112.52x = 307,893.58 × 121,135.97
  4. Step 4: Simplify right side
    223,112.52x = 37,296,987,936.97
  5. Step 5: Solve for x
    x = 37,296,987,936.97/223,112.52
  6. Step 6: Final answer
    x = 167,166.72

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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.