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Finding the Fourth Proportional to 131,194.54, 181,072.83 and 74,602.54

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Solution

The fourth proportional to 131,194.54, 181,072.83 and 74,602.54 is: 102,965.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,194.54 : 181,072.83 = 74,602.54 : x
  2. Step 2: Convert to fraction form
    131,194.54/181,072.83 = 74,602.54/x
  3. Step 3: Cross multiply
    131,194.54x = 181,072.83 × 74,602.54
  4. Step 4: Simplify right side
    131,194.54x = 13,508,493,042.99
  5. Step 5: Solve for x
    x = 13,508,493,042.99/131,194.54
  6. Step 6: Final answer
    x = 102,965.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.