Home / 202,021.08-278,727.31-117,121.20

Finding the Fourth Proportional to 202,021.08, 278,727.31 and 117,121.20

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Solution

The fourth proportional to 202,021.08, 278,727.31 and 117,121.20 is: 161,591.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,021.08 : 278,727.31 = 117,121.20 : x
  2. Step 2: Convert to fraction form
    202,021.08/278,727.31 = 117,121.20/x
  3. Step 3: Cross multiply
    202,021.08x = 278,727.31 × 117,121.20
  4. Step 4: Simplify right side
    202,021.08x = 32,644,875,040.73
  5. Step 5: Solve for x
    x = 32,644,875,040.73/202,021.08
  6. Step 6: Final answer
    x = 161,591.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.