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Finding the Fourth Proportional to 138,886.74, 208,330.47 and 33,705.54

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Solution

The fourth proportional to 138,886.74, 208,330.47 and 33,705.54 is: 50,558.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,886.74 : 208,330.47 = 33,705.54 : x
  2. Step 2: Convert to fraction form
    138,886.74/208,330.47 = 33,705.54/x
  3. Step 3: Cross multiply
    138,886.74x = 208,330.47 × 33,705.54
  4. Step 4: Simplify right side
    138,886.74x = 7,021,890,989.80
  5. Step 5: Solve for x
    x = 7,021,890,989.80/138,886.74
  6. Step 6: Final answer
    x = 50,558.40

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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.