Home / 149,961.83-206,947.73-81,979.61

Finding the Fourth Proportional to 149,961.83, 206,947.73 and 81,979.61

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Solution

The fourth proportional to 149,961.83, 206,947.73 and 81,979.61 is: 113,132.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,961.83 : 206,947.73 = 81,979.61 : x
  2. Step 2: Convert to fraction form
    149,961.83/206,947.73 = 81,979.61/x
  3. Step 3: Cross multiply
    149,961.83x = 206,947.73 × 81,979.61
  4. Step 4: Simplify right side
    149,961.83x = 16,965,493,366.00
  5. Step 5: Solve for x
    x = 16,965,493,366.00/149,961.83
  6. Step 6: Final answer
    x = 113,132.08

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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.