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Finding the Fourth Proportional to 181,605.40, 272,495.94 and 81,836.44

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Solution

The fourth proportional to 181,605.40, 272,495.94 and 81,836.44 is: 122,794.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,605.40 : 272,495.94 = 81,836.44 : x
  2. Step 2: Convert to fraction form
    181,605.40/272,495.94 = 81,836.44/x
  3. Step 3: Cross multiply
    181,605.40x = 272,495.94 × 81,836.44
  4. Step 4: Simplify right side
    181,605.40x = 22,300,097,644.05
  5. Step 5: Solve for x
    x = 22,300,097,644.05/181,605.40
  6. Step 6: Final answer
    x = 122,794.24

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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.