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Finding the Fourth Proportional to 201,660.80, 302,491.20 and 113,187.20

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Solution

The fourth proportional to 201,660.80, 302,491.20 and 113,187.20 is: 169,780.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,660.80 : 302,491.20 = 113,187.20 : x
  2. Step 2: Convert to fraction form
    201,660.80/302,491.20 = 113,187.20/x
  3. Step 3: Cross multiply
    201,660.80x = 302,491.20 × 113,187.20
  4. Step 4: Simplify right side
    201,660.80x = 34,238,131,952.64
  5. Step 5: Solve for x
    x = 34,238,131,952.64/201,660.80
  6. Step 6: Final answer
    x = 169,780.80

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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.