Home / 213,539.72-320,203.92-71,336.21

Finding the Fourth Proportional to 213,539.72, 320,203.92 and 71,336.21

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Solution

The fourth proportional to 213,539.72, 320,203.92 and 71,336.21 is: 106,969.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,539.72 : 320,203.92 = 71,336.21 : x
  2. Step 2: Convert to fraction form
    213,539.72/320,203.92 = 71,336.21/x
  3. Step 3: Cross multiply
    213,539.72x = 320,203.92 × 71,336.21
  4. Step 4: Simplify right side
    213,539.72x = 22,842,134,079.94
  5. Step 5: Solve for x
    x = 22,842,134,079.94/213,539.72
  6. Step 6: Final answer
    x = 106,969.02

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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.