Home / 221,781.20-306,058.04-121,179.20

Finding the Fourth Proportional to 221,781.20, 306,058.04 and 121,179.20

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Solution

The fourth proportional to 221,781.20, 306,058.04 and 121,179.20 is: 167,227.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,781.20 : 306,058.04 = 121,179.20 : x
  2. Step 2: Convert to fraction form
    221,781.20/306,058.04 = 121,179.20/x
  3. Step 3: Cross multiply
    221,781.20x = 306,058.04 × 121,179.20
  4. Step 4: Simplify right side
    221,781.20x = 37,087,866,304.58
  5. Step 5: Solve for x
    x = 37,087,866,304.58/221,781.20
  6. Step 6: Final answer
    x = 167,227.28

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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.