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Finding the Fourth Proportional to 201,707.90, 302,561.85 and 68,738.30

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Solution

The fourth proportional to 201,707.90, 302,561.85 and 68,738.30 is: 103,107.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,707.90 : 302,561.85 = 68,738.30 : x
  2. Step 2: Convert to fraction form
    201,707.90/302,561.85 = 68,738.30/x
  3. Step 3: Cross multiply
    201,707.90x = 302,561.85 × 68,738.30
  4. Step 4: Simplify right side
    201,707.90x = 20,797,587,213.86
  5. Step 5: Solve for x
    x = 20,797,587,213.86/201,707.90
  6. Step 6: Final answer
    x = 103,107.45

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1.5x scale

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.