Home / 192,540.42-288,703.97-78,768.14

Finding the Fourth Proportional to 192,540.42, 288,703.97 and 78,768.14

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Solution

The fourth proportional to 192,540.42, 288,703.97 and 78,768.14 is: 118,108.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,540.42 : 288,703.97 = 78,768.14 : x
  2. Step 2: Convert to fraction form
    192,540.42/288,703.97 = 78,768.14/x
  3. Step 3: Cross multiply
    192,540.42x = 288,703.97 × 78,768.14
  4. Step 4: Simplify right side
    192,540.42x = 22,740,672,890.16
  5. Step 5: Solve for x
    x = 22,740,672,890.16/192,540.42
  6. Step 6: Final answer
    x = 118,108.57

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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.