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Finding the Fourth Proportional to 172,425.81, 258,662.99 and 60,089.88

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Solution

The fourth proportional to 172,425.81, 258,662.99 and 60,089.88 is: 90,143.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,425.81 : 258,662.99 = 60,089.88 : x
  2. Step 2: Convert to fraction form
    172,425.81/258,662.99 = 60,089.88/x
  3. Step 3: Cross multiply
    172,425.81x = 258,662.99 × 60,089.88
  4. Step 4: Simplify right side
    172,425.81x = 15,543,027,729.09
  5. Step 5: Solve for x
    x = 15,543,027,729.09/172,425.81
  6. Step 6: Final answer
    x = 90,143.28

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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.