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Finding the Fourth Proportional to 120,745.22, 181,111.98 and 45,859.52

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Solution

The fourth proportional to 120,745.22, 181,111.98 and 45,859.52 is: 68,787.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,745.22 : 181,111.98 = 45,859.52 : x
  2. Step 2: Convert to fraction form
    120,745.22/181,111.98 = 45,859.52/x
  3. Step 3: Cross multiply
    120,745.22x = 181,111.98 × 45,859.52
  4. Step 4: Simplify right side
    120,745.22x = 8,305,707,563.49
  5. Step 5: Solve for x
    x = 8,305,707,563.49/120,745.22
  6. Step 6: Final answer
    x = 68,787.05

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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.