Home / 71,448.12-107,172.23-18,144.09

Finding the Fourth Proportional to 71,448.12, 107,172.23 and 18,144.09

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Solution

The fourth proportional to 71,448.12, 107,172.23 and 18,144.09 is: 27,216.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,448.12 : 107,172.23 = 18,144.09 : x
  2. Step 2: Convert to fraction form
    71,448.12/107,172.23 = 18,144.09/x
  3. Step 3: Cross multiply
    71,448.12x = 107,172.23 × 18,144.09
  4. Step 4: Simplify right side
    71,448.12x = 1,944,542,899.38
  5. Step 5: Solve for x
    x = 1,944,542,899.38/71,448.12
  6. Step 6: Final answer
    x = 27,216.15

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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.