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Finding the Fourth Proportional to 172,046.40, 258,069.60 and 132,680.40

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Solution

The fourth proportional to 172,046.40, 258,069.60 and 132,680.40 is: 199,020.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,046.40 : 258,069.60 = 132,680.40 : x
  2. Step 2: Convert to fraction form
    172,046.40/258,069.60 = 132,680.40/x
  3. Step 3: Cross multiply
    172,046.40x = 258,069.60 × 132,680.40
  4. Step 4: Simplify right side
    172,046.40x = 34,240,777,755.84
  5. Step 5: Solve for x
    x = 34,240,777,755.84/172,046.40
  6. Step 6: Final answer
    x = 199,020.60

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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.