Home / 213,966.42-320,953.26-80,909.70

Finding the Fourth Proportional to 213,966.42, 320,953.26 and 80,909.70

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Solution

The fourth proportional to 213,966.42, 320,953.26 and 80,909.70 is: 121,365.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,966.42 : 320,953.26 = 80,909.70 : x
  2. Step 2: Convert to fraction form
    213,966.42/320,953.26 = 80,909.70/x
  3. Step 3: Cross multiply
    213,966.42x = 320,953.26 × 80,909.70
  4. Step 4: Simplify right side
    213,966.42x = 25,968,231,980.62
  5. Step 5: Solve for x
    x = 25,968,231,980.62/213,966.42
  6. Step 6: Final answer
    x = 121,365.92

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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.