Home / 228,171.09-342,183.86-78,375.26

Finding the Fourth Proportional to 228,171.09, 342,183.86 and 78,375.26

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Solution

The fourth proportional to 228,171.09, 342,183.86 and 78,375.26 is: 117,537.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,171.09 : 342,183.86 = 78,375.26 : x
  2. Step 2: Convert to fraction form
    228,171.09/342,183.86 = 78,375.26/x
  3. Step 3: Cross multiply
    228,171.09x = 342,183.86 × 78,375.26
  4. Step 4: Simplify right side
    228,171.09x = 26,818,749,752.79
  5. Step 5: Solve for x
    x = 26,818,749,752.79/228,171.09
  6. Step 6: Final answer
    x = 117,537.89

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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.