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Finding the Fourth Proportional to 121,351.52, 181,884.31 and 54,713.63

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Solution

The fourth proportional to 121,351.52, 181,884.31 and 54,713.63 is: 82,005.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,351.52 : 181,884.31 = 54,713.63 : x
  2. Step 2: Convert to fraction form
    121,351.52/181,884.31 = 54,713.63/x
  3. Step 3: Cross multiply
    121,351.52x = 181,884.31 × 54,713.63
  4. Step 4: Simplify right side
    121,351.52x = 9,951,550,840.15
  5. Step 5: Solve for x
    x = 9,951,550,840.15/121,351.52
  6. Step 6: Final answer
    x = 82,005.98

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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.