Home / 121,843.20-168,159.24-68,131.56

Finding the Fourth Proportional to 121,843.20, 168,159.24 and 68,131.56

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Solution

The fourth proportional to 121,843.20, 168,159.24 and 68,131.56 is: 94,030.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,843.20 : 168,159.24 = 68,131.56 : x
  2. Step 2: Convert to fraction form
    121,843.20/168,159.24 = 68,131.56/x
  3. Step 3: Cross multiply
    121,843.20x = 168,159.24 × 68,131.56
  4. Step 4: Simplify right side
    121,843.20x = 11,456,951,349.61
  5. Step 5: Solve for x
    x = 11,456,951,349.61/121,843.20
  6. Step 6: Final answer
    x = 94,030.29

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1.5x scale

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.