Home / 79,964.20-119,946.30-74,132.20

Finding the Fourth Proportional to 79,964.20, 119,946.30 and 74,132.20

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Solution

The fourth proportional to 79,964.20, 119,946.30 and 74,132.20 is: 111,198.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,964.20 : 119,946.30 = 74,132.20 : x
  2. Step 2: Convert to fraction form
    79,964.20/119,946.30 = 74,132.20/x
  3. Step 3: Cross multiply
    79,964.20x = 119,946.30 × 74,132.20
  4. Step 4: Simplify right side
    79,964.20x = 8,891,883,100.86
  5. Step 5: Solve for x
    x = 8,891,883,100.86/79,964.20
  6. Step 6: Final answer
    x = 111,198.30

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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.