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Finding the Fourth Proportional to 171,966.86, 257,850.92 and 66,662.82

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Solution

The fourth proportional to 171,966.86, 257,850.92 and 66,662.82 is: 99,955.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,966.86 : 257,850.92 = 66,662.82 : x
  2. Step 2: Convert to fraction form
    171,966.86/257,850.92 = 66,662.82/x
  3. Step 3: Cross multiply
    171,966.86x = 257,850.92 × 66,662.82
  4. Step 4: Simplify right side
    171,966.86x = 17,189,069,466.79
  5. Step 5: Solve for x
    x = 17,189,069,466.79/171,966.86
  6. Step 6: Final answer
    x = 99,955.71

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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.