Home / 131,672.20-197,378.70-65,122.60

Finding the Fourth Proportional to 131,672.20, 197,378.70 and 65,122.60

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Solution

The fourth proportional to 131,672.20, 197,378.70 and 65,122.60 is: 97,619.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,672.20 : 197,378.70 = 65,122.60 : x
  2. Step 2: Convert to fraction form
    131,672.20/197,378.70 = 65,122.60/x
  3. Step 3: Cross multiply
    131,672.20x = 197,378.70 × 65,122.60
  4. Step 4: Simplify right side
    131,672.20x = 12,853,814,128.62
  5. Step 5: Solve for x
    x = 12,853,814,128.62/131,672.20
  6. Step 6: Final answer
    x = 97,619.80

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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.