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Finding the Fourth Proportional to 137,055.56, 205,661.10 and 54,007.88

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Solution

The fourth proportional to 137,055.56, 205,661.10 and 54,007.88 is: 81,042.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,055.56 : 205,661.10 = 54,007.88 : x
  2. Step 2: Convert to fraction form
    137,055.56/205,661.10 = 54,007.88/x
  3. Step 3: Cross multiply
    137,055.56x = 205,661.10 × 54,007.88
  4. Step 4: Simplify right side
    137,055.56x = 11,107,320,009.47
  5. Step 5: Solve for x
    x = 11,107,320,009.47/137,055.56
  6. Step 6: Final answer
    x = 81,042.46

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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.