Home / 120,619.73-180,936.65-40,651.00

Finding the Fourth Proportional to 120,619.73, 180,936.65 and 40,651.00

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Solution

The fourth proportional to 120,619.73, 180,936.65 and 40,651.00 is: 60,978.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,619.73 : 180,936.65 = 40,651.00 : x
  2. Step 2: Convert to fraction form
    120,619.73/180,936.65 = 40,651.00/x
  3. Step 3: Cross multiply
    120,619.73x = 180,936.65 × 40,651.00
  4. Step 4: Simplify right side
    120,619.73x = 7,355,255,408.44
  5. Step 5: Solve for x
    x = 7,355,255,408.44/120,619.73
  6. Step 6: Final answer
    x = 60,978.87

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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.