Home / 70,181.07-105,240.34-20,249.30

Finding the Fourth Proportional to 70,181.07, 105,240.34 and 20,249.30

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Solution

The fourth proportional to 70,181.07, 105,240.34 and 20,249.30 is: 30,364.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,181.07 : 105,240.34 = 20,249.30 : x
  2. Step 2: Convert to fraction form
    70,181.07/105,240.34 = 20,249.30/x
  3. Step 3: Cross multiply
    70,181.07x = 105,240.34 × 20,249.30
  4. Step 4: Simplify right side
    70,181.07x = 2,131,043,216.76
  5. Step 5: Solve for x
    x = 2,131,043,216.76/70,181.07
  6. Step 6: Final answer
    x = 30,364.93

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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.