Home / 300,113.20-450,015.90-89,723.80

Finding the Fourth Proportional to 300,113.20, 450,015.90 and 89,723.80

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Solution

The fourth proportional to 300,113.20, 450,015.90 and 89,723.80 is: 134,539.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,113.20 : 450,015.90 = 89,723.80 : x
  2. Step 2: Convert to fraction form
    300,113.20/450,015.90 = 89,723.80/x
  3. Step 3: Cross multiply
    300,113.20x = 450,015.90 × 89,723.80
  4. Step 4: Simplify right side
    300,113.20x = 40,377,136,608.42
  5. Step 5: Solve for x
    x = 40,377,136,608.42/300,113.20
  6. Step 6: Final answer
    x = 134,539.69

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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.