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Finding the Fourth Proportional to 192,614.67, 289,036.26 and 87,432.12

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Solution

The fourth proportional to 192,614.67, 289,036.26 and 87,432.12 is: 131,200.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,614.67 : 289,036.26 = 87,432.12 : x
  2. Step 2: Convert to fraction form
    192,614.67/289,036.26 = 87,432.12/x
  3. Step 3: Cross multiply
    192,614.67x = 289,036.26 × 87,432.12
  4. Step 4: Simplify right side
    192,614.67x = 25,271,052,968.67
  5. Step 5: Solve for x
    x = 25,271,052,968.67/192,614.67
  6. Step 6: Final answer
    x = 131,200.04

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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.