Home / 213,636.45-320,254.20-80,606.10

Finding the Fourth Proportional to 213,636.45, 320,254.20 and 80,606.10

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Solution

The fourth proportional to 213,636.45, 320,254.20 and 80,606.10 is: 120,833.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,636.45 : 320,254.20 = 80,606.10 : x
  2. Step 2: Convert to fraction form
    213,636.45/320,254.20 = 80,606.10/x
  3. Step 3: Cross multiply
    213,636.45x = 320,254.20 × 80,606.10
  4. Step 4: Simplify right side
    213,636.45x = 25,814,442,070.62
  5. Step 5: Solve for x
    x = 25,814,442,070.62/213,636.45
  6. Step 6: Final answer
    x = 120,833.51

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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.