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Finding the Fourth Proportional to 110,777.20, 166,220.02 and 68,646

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Solution

The fourth proportional to 110,777.20, 166,220.02 and 68,646 is: 103,002.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,777.20 : 166,220.02 = 68,646 : x
  2. Step 2: Convert to fraction form
    110,777.20/166,220.02 = 68,646/x
  3. Step 3: Cross multiply
    110,777.20x = 166,220.02 × 68,646
  4. Step 4: Simplify right side
    110,777.20x = 11,410,339,492.92
  5. Step 5: Solve for x
    x = 11,410,339,492.92/110,777.20
  6. Step 6: Final answer
    x = 103,002.60

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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.