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Finding the Fourth Proportional to 188,616.67, 260,296.46 and 103,739.20

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Solution

The fourth proportional to 188,616.67, 260,296.46 and 103,739.20 is: 143,163.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,616.67 : 260,296.46 = 103,739.20 : x
  2. Step 2: Convert to fraction form
    188,616.67/260,296.46 = 103,739.20/x
  3. Step 3: Cross multiply
    188,616.67x = 260,296.46 × 103,739.20
  4. Step 4: Simplify right side
    188,616.67x = 27,002,946,523.23
  5. Step 5: Solve for x
    x = 27,002,946,523.23/188,616.67
  6. Step 6: Final answer
    x = 143,163.10

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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.