Home / 102,864.78-154,137.60-71,336.34

Finding the Fourth Proportional to 102,864.78, 154,137.60 and 71,336.34

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Solution

The fourth proportional to 102,864.78, 154,137.60 and 71,336.34 is: 106,893.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,864.78 : 154,137.60 = 71,336.34 : x
  2. Step 2: Convert to fraction form
    102,864.78/154,137.60 = 71,336.34/x
  3. Step 3: Cross multiply
    102,864.78x = 154,137.60 × 71,336.34
  4. Step 4: Simplify right side
    102,864.78x = 10,995,612,240.38
  5. Step 5: Solve for x
    x = 10,995,612,240.38/102,864.78
  6. Step 6: Final answer
    x = 106,893.85

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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.