Home / 149,872.06-206,821.02-81,887.58

Finding the Fourth Proportional to 149,872.06, 206,821.02 and 81,887.58

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Solution

The fourth proportional to 149,872.06, 206,821.02 and 81,887.58 is: 113,003.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,872.06 : 206,821.02 = 81,887.58 : x
  2. Step 2: Convert to fraction form
    149,872.06/206,821.02 = 81,887.58/x
  3. Step 3: Cross multiply
    149,872.06x = 206,821.02 × 81,887.58
  4. Step 4: Simplify right side
    149,872.06x = 16,936,072,820.93
  5. Step 5: Solve for x
    x = 16,936,072,820.93/149,872.06
  6. Step 6: Final answer
    x = 113,003.54

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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.