Home / 201,815.72-302,720.32-68,788.60

Finding the Fourth Proportional to 201,815.72, 302,720.32 and 68,788.60

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Solution

The fourth proportional to 201,815.72, 302,720.32 and 68,788.60 is: 103,181.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,815.72 : 302,720.32 = 68,788.60 : x
  2. Step 2: Convert to fraction form
    201,815.72/302,720.32 = 68,788.60/x
  3. Step 3: Cross multiply
    201,815.72x = 302,720.32 × 68,788.60
  4. Step 4: Simplify right side
    201,815.72x = 20,823,707,004.35
  5. Step 5: Solve for x
    x = 20,823,707,004.35/201,815.72
  6. Step 6: Final answer
    x = 103,181.79

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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.