Home / 209,172.45-288,660.21-113,679.15

Finding the Fourth Proportional to 209,172.45, 288,660.21 and 113,679.15

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Solution

The fourth proportional to 209,172.45, 288,660.21 and 113,679.15 is: 156,878.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,172.45 : 288,660.21 = 113,679.15 : x
  2. Step 2: Convert to fraction form
    209,172.45/288,660.21 = 113,679.15/x
  3. Step 3: Cross multiply
    209,172.45x = 288,660.21 × 113,679.15
  4. Step 4: Simplify right side
    209,172.45x = 32,814,647,311.62
  5. Step 5: Solve for x
    x = 32,814,647,311.62/209,172.45
  6. Step 6: Final answer
    x = 156,878.44

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1.5x scale

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.