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Finding the Fourth Proportional to 123,699.25, 170,704.25 and 67,109.41

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Solution

The fourth proportional to 123,699.25, 170,704.25 and 67,109.41 is: 92,610.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,699.25 : 170,704.25 = 67,109.41 : x
  2. Step 2: Convert to fraction form
    123,699.25/170,704.25 = 67,109.41/x
  3. Step 3: Cross multiply
    123,699.25x = 170,704.25 × 67,109.41
  4. Step 4: Simplify right side
    123,699.25x = 11,455,860,991.35
  5. Step 5: Solve for x
    x = 11,455,860,991.35/123,699.25
  6. Step 6: Final answer
    x = 92,610.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.