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Finding the Fourth Proportional to 199,308.92, 275,051.49 and 122,878.51

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Solution

The fourth proportional to 199,308.92, 275,051.49 and 122,878.51 is: 169,575.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,308.92 : 275,051.49 = 122,878.51 : x
  2. Step 2: Convert to fraction form
    199,308.92/275,051.49 = 122,878.51/x
  3. Step 3: Cross multiply
    199,308.92x = 275,051.49 × 122,878.51
  4. Step 4: Simplify right side
    199,308.92x = 33,797,917,264.48
  5. Step 5: Solve for x
    x = 33,797,917,264.48/199,308.92
  6. Step 6: Final answer
    x = 169,575.54

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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.