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Finding the Fourth Proportional to 146,313, 201,911.94 and 79,245

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Solution

The fourth proportional to 146,313, 201,911.94 and 79,245 is: 109,358.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,313 : 201,911.94 = 79,245 : x
  2. Step 2: Convert to fraction form
    146,313/201,911.94 = 79,245/x
  3. Step 3: Cross multiply
    146,313x = 201,911.94 × 79,245
  4. Step 4: Simplify right side
    146,313x = 16,000,511,685.30
  5. Step 5: Solve for x
    x = 16,000,511,685.30/146,313
  6. Step 6: Final answer
    x = 109,358.10

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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.