Home / 70,149.87-105,240.35-20,226.07

Finding the Fourth Proportional to 70,149.87, 105,240.35 and 20,226.07

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Solution

The fourth proportional to 70,149.87, 105,240.35 and 20,226.07 is: 30,343.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,149.87 : 105,240.35 = 20,226.07 : x
  2. Step 2: Convert to fraction form
    70,149.87/105,240.35 = 20,226.07/x
  3. Step 3: Cross multiply
    70,149.87x = 105,240.35 × 20,226.07
  4. Step 4: Simplify right side
    70,149.87x = 2,128,598,685.92
  5. Step 5: Solve for x
    x = 2,128,598,685.92/70,149.87
  6. Step 6: Final answer
    x = 30,343.59

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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.