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Finding the Fourth Proportional to 120,764.40, 181,211.40 and 50,650.80

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Solution

The fourth proportional to 120,764.40, 181,211.40 and 50,650.80 is: 76,003.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,764.40 : 181,211.40 = 50,650.80 : x
  2. Step 2: Convert to fraction form
    120,764.40/181,211.40 = 50,650.80/x
  3. Step 3: Cross multiply
    120,764.40x = 181,211.40 × 50,650.80
  4. Step 4: Simplify right side
    120,764.40x = 9,178,502,379.12
  5. Step 5: Solve for x
    x = 9,178,502,379.12/120,764.40
  6. Step 6: Final answer
    x = 76,003.38

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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.