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Finding the Fourth Proportional to 123,351.36, 185,028 and 40,245.60

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Solution

The fourth proportional to 123,351.36, 185,028 and 40,245.60 is: 60,368.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,351.36 : 185,028 = 40,245.60 : x
  2. Step 2: Convert to fraction form
    123,351.36/185,028 = 40,245.60/x
  3. Step 3: Cross multiply
    123,351.36x = 185,028 × 40,245.60
  4. Step 4: Simplify right side
    123,351.36x = 7,446,562,876.80
  5. Step 5: Solve for x
    x = 7,446,562,876.80/123,351.36
  6. Step 6: Final answer
    x = 60,368.71

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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.