Home / 201,428.20-302,142.30-61,168.60

Finding the Fourth Proportional to 201,428.20, 302,142.30 and 61,168.60

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Solution

The fourth proportional to 201,428.20, 302,142.30 and 61,168.60 is: 91,752.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,428.20 : 302,142.30 = 61,168.60 : x
  2. Step 2: Convert to fraction form
    201,428.20/302,142.30 = 61,168.60/x
  3. Step 3: Cross multiply
    201,428.20x = 302,142.30 × 61,168.60
  4. Step 4: Simplify right side
    201,428.20x = 18,481,621,491.78
  5. Step 5: Solve for x
    x = 18,481,621,491.78/201,428.20
  6. Step 6: Final answer
    x = 91,752.90

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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.