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Finding the Fourth Proportional to 172,360.60, 258,735.30 and 133,091.80

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Solution

The fourth proportional to 172,360.60, 258,735.30 and 133,091.80 is: 199,787.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,360.60 : 258,735.30 = 133,091.80 : x
  2. Step 2: Convert to fraction form
    172,360.60/258,735.30 = 133,091.80/x
  3. Step 3: Cross multiply
    172,360.60x = 258,735.30 × 133,091.80
  4. Step 4: Simplify right side
    172,360.60x = 34,435,546,800.54
  5. Step 5: Solve for x
    x = 34,435,546,800.54/172,360.60
  6. Step 6: Final answer
    x = 199,787.81

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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.