Home / 70,181.34-105,240.73-20,249.57

Finding the Fourth Proportional to 70,181.34, 105,240.73 and 20,249.57

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Solution

The fourth proportional to 70,181.34, 105,240.73 and 20,249.57 is: 30,365.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,181.34 : 105,240.73 = 20,249.57 : x
  2. Step 2: Convert to fraction form
    70,181.34/105,240.73 = 20,249.57/x
  3. Step 3: Cross multiply
    70,181.34x = 105,240.73 × 20,249.57
  4. Step 4: Simplify right side
    70,181.34x = 2,131,079,511.92
  5. Step 5: Solve for x
    x = 2,131,079,511.92/70,181.34
  6. Step 6: Final answer
    x = 30,365.33

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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.