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Finding the Fourth Proportional to 79,119.10, 118,491.54 and 68,674.42

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Solution

The fourth proportional to 79,119.10, 118,491.54 and 68,674.42 is: 102,849.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,119.10 : 118,491.54 = 68,674.42 : x
  2. Step 2: Convert to fraction form
    79,119.10/118,491.54 = 68,674.42/x
  3. Step 3: Cross multiply
    79,119.10x = 118,491.54 × 68,674.42
  4. Step 4: Simplify right side
    79,119.10x = 8,137,337,784.41
  5. Step 5: Solve for x
    x = 8,137,337,784.41/79,119.10
  6. Step 6: Final answer
    x = 102,849.22

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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.