Home / 154,379.26-231,450.18-78,415.39

Finding the Fourth Proportional to 154,379.26, 231,450.18 and 78,415.39

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Solution

The fourth proportional to 154,379.26, 231,450.18 and 78,415.39 is: 117,562.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,379.26 : 231,450.18 = 78,415.39 : x
  2. Step 2: Convert to fraction form
    154,379.26/231,450.18 = 78,415.39/x
  3. Step 3: Cross multiply
    154,379.26x = 231,450.18 × 78,415.39
  4. Step 4: Simplify right side
    154,379.26x = 18,149,254,580.94
  5. Step 5: Solve for x
    x = 18,149,254,580.94/154,379.26
  6. Step 6: Final answer
    x = 117,562.78

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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.