Home / 138,100.23-207,141.84-49,349.34

Finding the Fourth Proportional to 138,100.23, 207,141.84 and 49,349.34

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Solution

The fourth proportional to 138,100.23, 207,141.84 and 49,349.34 is: 74,020.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,100.23 : 207,141.84 = 49,349.34 : x
  2. Step 2: Convert to fraction form
    138,100.23/207,141.84 = 49,349.34/x
  3. Step 3: Cross multiply
    138,100.23x = 207,141.84 × 49,349.34
  4. Step 4: Simplify right side
    138,100.23x = 10,222,313,090.39
  5. Step 5: Solve for x
    x = 10,222,313,090.39/138,100.23
  6. Step 6: Final answer
    x = 74,020.97

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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.