Home / 245,720.25-368,669.07-85,819.73

Finding the Fourth Proportional to 245,720.25, 368,669.07 and 85,819.73

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Solution

The fourth proportional to 245,720.25, 368,669.07 and 85,819.73 is: 128,760.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,720.25 : 368,669.07 = 85,819.73 : x
  2. Step 2: Convert to fraction form
    245,720.25/368,669.07 = 85,819.73/x
  3. Step 3: Cross multiply
    245,720.25x = 368,669.07 × 85,819.73
  4. Step 4: Simplify right side
    245,720.25x = 31,639,078,203.41
  5. Step 5: Solve for x
    x = 31,639,078,203.41/245,720.25
  6. Step 6: Final answer
    x = 128,760.56

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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.