Home / 209,977.71-315,029.40-67,845.32

Finding the Fourth Proportional to 209,977.71, 315,029.40 and 67,845.32

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Solution

The fourth proportional to 209,977.71, 315,029.40 and 67,845.32 is: 101,788.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,977.71 : 315,029.40 = 67,845.32 : x
  2. Step 2: Convert to fraction form
    209,977.71/315,029.40 = 67,845.32/x
  3. Step 3: Cross multiply
    209,977.71x = 315,029.40 × 67,845.32
  4. Step 4: Simplify right side
    209,977.71x = 21,373,270,452.41
  5. Step 5: Solve for x
    x = 21,373,270,452.41/209,977.71
  6. Step 6: Final answer
    x = 101,788.28

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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.