Home / 131,749.80-197,163.90-120,690.60

Finding the Fourth Proportional to 131,749.80, 197,163.90 and 120,690.60

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Solution

The fourth proportional to 131,749.80, 197,163.90 and 120,690.60 is: 180,613.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,749.80 : 197,163.90 = 120,690.60 : x
  2. Step 2: Convert to fraction form
    131,749.80/197,163.90 = 120,690.60/x
  3. Step 3: Cross multiply
    131,749.80x = 197,163.90 × 120,690.60
  4. Step 4: Simplify right side
    131,749.80x = 23,795,829,389.34
  5. Step 5: Solve for x
    x = 23,795,829,389.34/131,749.80
  6. Step 6: Final answer
    x = 180,613.78

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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.