Home / 209,747.37-289,442.03-122,540.56

Finding the Fourth Proportional to 209,747.37, 289,442.03 and 122,540.56

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Solution

The fourth proportional to 209,747.37, 289,442.03 and 122,540.56 is: 169,100.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,747.37 : 289,442.03 = 122,540.56 : x
  2. Step 2: Convert to fraction form
    209,747.37/289,442.03 = 122,540.56/x
  3. Step 3: Cross multiply
    209,747.37x = 289,442.03 × 122,540.56
  4. Step 4: Simplify right side
    209,747.37x = 35,468,389,521.01
  5. Step 5: Solve for x
    x = 35,468,389,521.01/209,747.37
  6. Step 6: Final answer
    x = 169,100.52

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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.