Home / 206,541.09-309,826.49-86,477.22

Finding the Fourth Proportional to 206,541.09, 309,826.49 and 86,477.22

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Solution

The fourth proportional to 206,541.09, 309,826.49 and 86,477.22 is: 129,722.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,541.09 : 309,826.49 = 86,477.22 : x
  2. Step 2: Convert to fraction form
    206,541.09/309,826.49 = 86,477.22/x
  3. Step 3: Cross multiply
    206,541.09x = 309,826.49 × 86,477.22
  4. Step 4: Simplify right side
    206,541.09x = 26,792,933,105.17
  5. Step 5: Solve for x
    x = 26,792,933,105.17/206,541.09
  6. Step 6: Final answer
    x = 129,722.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.