Home / 209,777.31-289,548.68-129,217.95

Finding the Fourth Proportional to 209,777.31, 289,548.68 and 129,217.95

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Solution

The fourth proportional to 209,777.31, 289,548.68 and 129,217.95 is: 178,355.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,777.31 : 289,548.68 = 129,217.95 : x
  2. Step 2: Convert to fraction form
    209,777.31/289,548.68 = 129,217.95/x
  3. Step 3: Cross multiply
    209,777.31x = 289,548.68 × 129,217.95
  4. Step 4: Simplify right side
    209,777.31x = 37,414,886,208.72
  5. Step 5: Solve for x
    x = 37,414,886,208.72/209,777.31
  6. Step 6: Final answer
    x = 178,355.26

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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.