Home / 442,103.20-663,154.80-109,679.20

Finding the Fourth Proportional to 442,103.20, 663,154.80 and 109,679.20

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Solution

The fourth proportional to 442,103.20, 663,154.80 and 109,679.20 is: 164,518.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,103.20 : 663,154.80 = 109,679.20 : x
  2. Step 2: Convert to fraction form
    442,103.20/663,154.80 = 109,679.20/x
  3. Step 3: Cross multiply
    442,103.20x = 663,154.80 × 109,679.20
  4. Step 4: Simplify right side
    442,103.20x = 72,734,287,940.16
  5. Step 5: Solve for x
    x = 72,734,287,940.16/442,103.20
  6. Step 6: Final answer
    x = 164,518.80

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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.