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Finding the Fourth Proportional to 137,054.56, 205,659.60 and 54,006.88

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Solution

The fourth proportional to 137,054.56, 205,659.60 and 54,006.88 is: 81,040.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,054.56 : 205,659.60 = 54,006.88 : x
  2. Step 2: Convert to fraction form
    137,054.56/205,659.60 = 54,006.88/x
  3. Step 3: Cross multiply
    137,054.56x = 205,659.60 × 54,006.88
  4. Step 4: Simplify right side
    137,054.56x = 11,107,033,338.05
  5. Step 5: Solve for x
    x = 11,107,033,338.05/137,054.56
  6. Step 6: Final answer
    x = 81,040.96

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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.