Home / 208,974.90-288,380.48-122,939.42

Finding the Fourth Proportional to 208,974.90, 288,380.48 and 122,939.42

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Solution

The fourth proportional to 208,974.90, 288,380.48 and 122,939.42 is: 169,653.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,974.90 : 288,380.48 = 122,939.42 : x
  2. Step 2: Convert to fraction form
    208,974.90/288,380.48 = 122,939.42/x
  3. Step 3: Cross multiply
    208,974.90x = 288,380.48 × 122,939.42
  4. Step 4: Simplify right side
    208,974.90x = 35,453,329,978.82
  5. Step 5: Solve for x
    x = 35,453,329,978.82/208,974.90
  6. Step 6: Final answer
    x = 169,653.53

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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.