Home / 102,905.72-154,358.62-67,837.20

Finding the Fourth Proportional to 102,905.72, 154,358.62 and 67,837.20

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Solution

The fourth proportional to 102,905.72, 154,358.62 and 67,837.20 is: 101,755.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,905.72 : 154,358.62 = 67,837.20 : x
  2. Step 2: Convert to fraction form
    102,905.72/154,358.62 = 67,837.20/x
  3. Step 3: Cross multiply
    102,905.72x = 154,358.62 × 67,837.20
  4. Step 4: Simplify right side
    102,905.72x = 10,471,256,576.66
  5. Step 5: Solve for x
    x = 10,471,256,576.66/102,905.72
  6. Step 6: Final answer
    x = 101,755.83

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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.