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Finding the Fourth Proportional to 201,720.70, 302,493.56 and 68,565.20

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Solution

The fourth proportional to 201,720.70, 302,493.56 and 68,565.20 is: 102,818.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,720.70 : 302,493.56 = 68,565.20 : x
  2. Step 2: Convert to fraction form
    201,720.70/302,493.56 = 68,565.20/x
  3. Step 3: Cross multiply
    201,720.70x = 302,493.56 × 68,565.20
  4. Step 4: Simplify right side
    201,720.70x = 20,740,531,440.11
  5. Step 5: Solve for x
    x = 20,740,531,440.11/201,720.70
  6. Step 6: Final answer
    x = 102,818.06

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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.