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Finding the Fourth Proportional to 181,858.80, 272,658.60 and 81,937.20

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Solution

The fourth proportional to 181,858.80, 272,658.60 and 81,937.20 is: 122,847.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,858.80 : 272,658.60 = 81,937.20 : x
  2. Step 2: Convert to fraction form
    181,858.80/272,658.60 = 81,937.20/x
  3. Step 3: Cross multiply
    181,858.80x = 272,658.60 × 81,937.20
  4. Step 4: Simplify right side
    181,858.80x = 22,340,882,239.92
  5. Step 5: Solve for x
    x = 22,340,882,239.92/181,858.80
  6. Step 6: Final answer
    x = 122,847.41

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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.