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Finding the Fourth Proportional to 165,175.12, 247,762.68 and 66,610

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Solution

The fourth proportional to 165,175.12, 247,762.68 and 66,610 is: 99,915

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,175.12 : 247,762.68 = 66,610 : x
  2. Step 2: Convert to fraction form
    165,175.12/247,762.68 = 66,610/x
  3. Step 3: Cross multiply
    165,175.12x = 247,762.68 × 66,610
  4. Step 4: Simplify right side
    165,175.12x = 16,503,472,114.80
  5. Step 5: Solve for x
    x = 16,503,472,114.80/165,175.12
  6. Step 6: Final answer
    x = 99,915

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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.