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Finding the Fourth Proportional to 120,697.90, 180,755.44 and 60,537.17

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Solution

The fourth proportional to 120,697.90, 180,755.44 and 60,537.17 is: 90,659.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,697.90 : 180,755.44 = 60,537.17 : x
  2. Step 2: Convert to fraction form
    120,697.90/180,755.44 = 60,537.17/x
  3. Step 3: Cross multiply
    120,697.90x = 180,755.44 × 60,537.17
  4. Step 4: Simplify right side
    120,697.90x = 10,942,422,799.70
  5. Step 5: Solve for x
    x = 10,942,422,799.70/120,697.90
  6. Step 6: Final answer
    x = 90,659.60

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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.