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Finding the Fourth Proportional to 138,134.96, 206,808.72 and 93,665.96

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Solution

The fourth proportional to 138,134.96, 206,808.72 and 93,665.96 is: 140,231.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,134.96 : 206,808.72 = 93,665.96 : x
  2. Step 2: Convert to fraction form
    138,134.96/206,808.72 = 93,665.96/x
  3. Step 3: Cross multiply
    138,134.96x = 206,808.72 × 93,665.96
  4. Step 4: Simplify right side
    138,134.96x = 19,370,937,295.17
  5. Step 5: Solve for x
    x = 19,370,937,295.17/138,134.96
  6. Step 6: Final answer
    x = 140,231.97

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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.