Home / 149,874.06-206,823.78-81,889.58

Finding the Fourth Proportional to 149,874.06, 206,823.78 and 81,889.58

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Solution

The fourth proportional to 149,874.06, 206,823.78 and 81,889.58 is: 113,006.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,874.06 : 206,823.78 = 81,889.58 : x
  2. Step 2: Convert to fraction form
    149,874.06/206,823.78 = 81,889.58/x
  3. Step 3: Cross multiply
    149,874.06x = 206,823.78 × 81,889.58
  4. Step 4: Simplify right side
    149,874.06x = 16,936,712,478.21
  5. Step 5: Solve for x
    x = 16,936,712,478.21/149,874.06
  6. Step 6: Final answer
    x = 113,006.30

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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.