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Finding the Fourth Proportional to 129,676.97, 194,351.82 and 69,556.34

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Solution

The fourth proportional to 129,676.97, 194,351.82 and 69,556.34 is: 104,246.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,676.97 : 194,351.82 = 69,556.34 : x
  2. Step 2: Convert to fraction form
    129,676.97/194,351.82 = 69,556.34/x
  3. Step 3: Cross multiply
    129,676.97x = 194,351.82 × 69,556.34
  4. Step 4: Simplify right side
    129,676.97x = 13,518,401,271.54
  5. Step 5: Solve for x
    x = 13,518,401,271.54/129,676.97
  6. Step 6: Final answer
    x = 104,246.74

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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.