Home / 149,962.06-206,947.51-81,979.30

Finding the Fourth Proportional to 149,962.06, 206,947.51 and 81,979.30

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Solution

The fourth proportional to 149,962.06, 206,947.51 and 81,979.30 is: 113,131.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,962.06 : 206,947.51 = 81,979.30 : x
  2. Step 2: Convert to fraction form
    149,962.06/206,947.51 = 81,979.30/x
  3. Step 3: Cross multiply
    149,962.06x = 206,947.51 × 81,979.30
  4. Step 4: Simplify right side
    149,962.06x = 16,965,412,006.54
  5. Step 5: Solve for x
    x = 16,965,412,006.54/149,962.06
  6. Step 6: Final answer
    x = 113,131.36

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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.