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Finding the Fourth Proportional to 170,625, 255,431.88 and 126,449.94

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Solution

The fourth proportional to 170,625, 255,431.88 and 126,449.94 is: 189,300.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,625 : 255,431.88 = 126,449.94 : x
  2. Step 2: Convert to fraction form
    170,625/255,431.88 = 126,449.94/x
  3. Step 3: Cross multiply
    170,625x = 255,431.88 × 126,449.94
  4. Step 4: Simplify right side
    170,625x = 32,299,345,900.09
  5. Step 5: Solve for x
    x = 32,299,345,900.09/170,625
  6. Step 6: Final answer
    x = 189,300.20

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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.