Home / 105,198.21-145,172.76-57,451.56

Finding the Fourth Proportional to 105,198.21, 145,172.76 and 57,451.56

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Solution

The fourth proportional to 105,198.21, 145,172.76 and 57,451.56 is: 79,282.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,198.21 : 145,172.76 = 57,451.56 : x
  2. Step 2: Convert to fraction form
    105,198.21/145,172.76 = 57,451.56/x
  3. Step 3: Cross multiply
    105,198.21x = 145,172.76 × 57,451.56
  4. Step 4: Simplify right side
    105,198.21x = 8,340,401,531.51
  5. Step 5: Solve for x
    x = 8,340,401,531.51/105,198.21
  6. Step 6: Final answer
    x = 79,282.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.