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Finding the Fourth Proportional to 171,372.60, 256,910.88 and 66,265.32

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Solution

The fourth proportional to 171,372.60, 256,910.88 and 66,265.32 is: 99,340.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,372.60 : 256,910.88 = 66,265.32 : x
  2. Step 2: Convert to fraction form
    171,372.60/256,910.88 = 66,265.32/x
  3. Step 3: Cross multiply
    171,372.60x = 256,910.88 × 66,265.32
  4. Step 4: Simplify right side
    171,372.60x = 17,024,281,674.68
  5. Step 5: Solve for x
    x = 17,024,281,674.68/171,372.60
  6. Step 6: Final answer
    x = 99,340.74

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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.