Home / 228,173.09-342,186.86-78,377.26

Finding the Fourth Proportional to 228,173.09, 342,186.86 and 78,377.26

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Solution

The fourth proportional to 228,173.09, 342,186.86 and 78,377.26 is: 117,540.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,173.09 : 342,186.86 = 78,377.26 : x
  2. Step 2: Convert to fraction form
    228,173.09/342,186.86 = 78,377.26/x
  3. Step 3: Cross multiply
    228,173.09x = 342,186.86 × 78,377.26
  4. Step 4: Simplify right side
    228,173.09x = 26,819,668,494.80
  5. Step 5: Solve for x
    x = 26,819,668,494.80/228,173.09
  6. Step 6: Final answer
    x = 117,540.89

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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.