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Finding the Fourth Proportional to 124,791.22, 186,990 and 45,796.78

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Solution

The fourth proportional to 124,791.22, 186,990 and 45,796.78 is: 68,622.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,791.22 : 186,990 = 45,796.78 : x
  2. Step 2: Convert to fraction form
    124,791.22/186,990 = 45,796.78/x
  3. Step 3: Cross multiply
    124,791.22x = 186,990 × 45,796.78
  4. Step 4: Simplify right side
    124,791.22x = 8,563,539,892.20
  5. Step 5: Solve for x
    x = 8,563,539,892.20/124,791.22
  6. Step 6: Final answer
    x = 68,622.94

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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.