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Finding the Fourth Proportional to 138,795.66, 208,258.02 and 44,040.78

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Solution

The fourth proportional to 138,795.66, 208,258.02 and 44,040.78 is: 66,081.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,795.66 : 208,258.02 = 44,040.78 : x
  2. Step 2: Convert to fraction form
    138,795.66/208,258.02 = 44,040.78/x
  3. Step 3: Cross multiply
    138,795.66x = 208,258.02 × 44,040.78
  4. Step 4: Simplify right side
    138,795.66x = 9,171,845,642.06
  5. Step 5: Solve for x
    x = 9,171,845,642.06/138,795.66
  6. Step 6: Final answer
    x = 66,081.65

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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.