Home / 149,959.01-206,943.85-81,976.79

Finding the Fourth Proportional to 149,959.01, 206,943.85 and 81,976.79

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Solution

The fourth proportional to 149,959.01, 206,943.85 and 81,976.79 is: 113,128.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,959.01 : 206,943.85 = 81,976.79 : x
  2. Step 2: Convert to fraction form
    149,959.01/206,943.85 = 81,976.79/x
  3. Step 3: Cross multiply
    149,959.01x = 206,943.85 × 81,976.79
  4. Step 4: Simplify right side
    149,959.01x = 16,964,592,691.95
  5. Step 5: Solve for x
    x = 16,964,592,691.95/149,959.01
  6. Step 6: Final answer
    x = 113,128.20

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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.