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Finding the Fourth Proportional to 80,144.70, 120,102.30 and 45,010.68

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Solution

The fourth proportional to 80,144.70, 120,102.30 and 45,010.68 is: 67,451.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,144.70 : 120,102.30 = 45,010.68 : x
  2. Step 2: Convert to fraction form
    80,144.70/120,102.30 = 45,010.68/x
  3. Step 3: Cross multiply
    80,144.70x = 120,102.30 × 45,010.68
  4. Step 4: Simplify right side
    80,144.70x = 5,405,886,192.56
  5. Step 5: Solve for x
    x = 5,405,886,192.56/80,144.70
  6. Step 6: Final answer
    x = 67,451.57

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1.5x scale

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.