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Finding the Fourth Proportional to 138,744.76, 208,093.66 and 38,881.97

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Solution

The fourth proportional to 138,744.76, 208,093.66 and 38,881.97 is: 58,316.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,744.76 : 208,093.66 = 38,881.97 : x
  2. Step 2: Convert to fraction form
    138,744.76/208,093.66 = 38,881.97/x
  3. Step 3: Cross multiply
    138,744.76x = 208,093.66 × 38,881.97
  4. Step 4: Simplify right side
    138,744.76x = 8,091,091,445.31
  5. Step 5: Solve for x
    x = 8,091,091,445.31/138,744.76
  6. Step 6: Final answer
    x = 58,316.37

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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.