Home / 149,875.29-206,821.49-81,891.18

Finding the Fourth Proportional to 149,875.29, 206,821.49 and 81,891.18

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Solution

The fourth proportional to 149,875.29, 206,821.49 and 81,891.18 is: 113,006.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,875.29 : 206,821.49 = 81,891.18 : x
  2. Step 2: Convert to fraction form
    149,875.29/206,821.49 = 81,891.18/x
  3. Step 3: Cross multiply
    149,875.29x = 206,821.49 × 81,891.18
  4. Step 4: Simplify right side
    149,875.29x = 16,936,855,456.00
  5. Step 5: Solve for x
    x = 16,936,855,456.00/149,875.29
  6. Step 6: Final answer
    x = 113,006.32

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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.