Home / 213,520.21-320,171.37-71,314.27

Finding the Fourth Proportional to 213,520.21, 320,171.37 and 71,314.27

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Solution

The fourth proportional to 213,520.21, 320,171.37 and 71,314.27 is: 106,935.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,520.21 : 320,171.37 = 71,314.27 : x
  2. Step 2: Convert to fraction form
    213,520.21/320,171.37 = 71,314.27/x
  3. Step 3: Cross multiply
    213,520.21x = 320,171.37 × 71,314.27
  4. Step 4: Simplify right side
    213,520.21x = 22,832,787,526.45
  5. Step 5: Solve for x
    x = 22,832,787,526.45/213,520.21
  6. Step 6: Final answer
    x = 106,935.02

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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.