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Finding the Fourth Proportional to 139,614.60, 192,624.60 and 79,180.48

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Solution

The fourth proportional to 139,614.60, 192,624.60 and 79,180.48 is: 109,244.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,614.60 : 192,624.60 = 79,180.48 : x
  2. Step 2: Convert to fraction form
    139,614.60/192,624.60 = 79,180.48/x
  3. Step 3: Cross multiply
    139,614.60x = 192,624.60 × 79,180.48
  4. Step 4: Simplify right side
    139,614.60x = 15,252,108,287.81
  5. Step 5: Solve for x
    x = 15,252,108,287.81/139,614.60
  6. Step 6: Final answer
    x = 109,244.36

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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.