Home / 209,326.20-313,892.10-90,936.60

Finding the Fourth Proportional to 209,326.20, 313,892.10 and 90,936.60

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Solution

The fourth proportional to 209,326.20, 313,892.10 and 90,936.60 is: 136,362.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,326.20 : 313,892.10 = 90,936.60 : x
  2. Step 2: Convert to fraction form
    209,326.20/313,892.10 = 90,936.60/x
  3. Step 3: Cross multiply
    209,326.20x = 313,892.10 × 90,936.60
  4. Step 4: Simplify right side
    209,326.20x = 28,544,280,340.86
  5. Step 5: Solve for x
    x = 28,544,280,340.86/209,326.20
  6. Step 6: Final answer
    x = 136,362.67

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1.5x scale

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.