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Finding the Fourth Proportional to 171,630.60, 257,369.10 and 66,414.60

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Solution

The fourth proportional to 171,630.60, 257,369.10 and 66,414.60 is: 99,592.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,630.60 : 257,369.10 = 66,414.60 : x
  2. Step 2: Convert to fraction form
    171,630.60/257,369.10 = 66,414.60/x
  3. Step 3: Cross multiply
    171,630.60x = 257,369.10 × 66,414.60
  4. Step 4: Simplify right side
    171,630.60x = 17,093,065,828.86
  5. Step 5: Solve for x
    x = 17,093,065,828.86/171,630.60
  6. Step 6: Final answer
    x = 99,592.18

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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.