Home / 112,408.20-168,608.40-28,169.10

Finding the Fourth Proportional to 112,408.20, 168,608.40 and 28,169.10

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Solution

The fourth proportional to 112,408.20, 168,608.40 and 28,169.10 is: 42,252.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,408.20 : 168,608.40 = 28,169.10 : x
  2. Step 2: Convert to fraction form
    112,408.20/168,608.40 = 28,169.10/x
  3. Step 3: Cross multiply
    112,408.20x = 168,608.40 × 28,169.10
  4. Step 4: Simplify right side
    112,408.20x = 4,749,546,880.44
  5. Step 5: Solve for x
    x = 4,749,546,880.44/112,408.20
  6. Step 6: Final answer
    x = 42,252.67

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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.