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Finding the Fourth Proportional to 192,855.60, 289,326.60 and 74,516.40

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Solution

The fourth proportional to 192,855.60, 289,326.60 and 74,516.40 is: 111,791.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,855.60 : 289,326.60 = 74,516.40 : x
  2. Step 2: Convert to fraction form
    192,855.60/289,326.60 = 74,516.40/x
  3. Step 3: Cross multiply
    192,855.60x = 289,326.60 × 74,516.40
  4. Step 4: Simplify right side
    192,855.60x = 21,559,576,656.24
  5. Step 5: Solve for x
    x = 21,559,576,656.24/192,855.60
  6. Step 6: Final answer
    x = 111,791.29

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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.