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Finding the Fourth Proportional to 109,658.80, 164,493.60 and 57,170.80

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Solution

The fourth proportional to 109,658.80, 164,493.60 and 57,170.80 is: 85,759.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,658.80 : 164,493.60 = 57,170.80 : x
  2. Step 2: Convert to fraction form
    109,658.80/164,493.60 = 57,170.80/x
  3. Step 3: Cross multiply
    109,658.80x = 164,493.60 × 57,170.80
  4. Step 4: Simplify right side
    109,658.80x = 9,404,230,706.88
  5. Step 5: Solve for x
    x = 9,404,230,706.88/109,658.80
  6. Step 6: Final answer
    x = 85,759.02

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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.