Home / 143,039.20-214,558.80-80,053.60

Finding the Fourth Proportional to 143,039.20, 214,558.80 and 80,053.60

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Solution

The fourth proportional to 143,039.20, 214,558.80 and 80,053.60 is: 120,080.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,039.20 : 214,558.80 = 80,053.60 : x
  2. Step 2: Convert to fraction form
    143,039.20/214,558.80 = 80,053.60/x
  3. Step 3: Cross multiply
    143,039.20x = 214,558.80 × 80,053.60
  4. Step 4: Simplify right side
    143,039.20x = 17,176,204,351.68
  5. Step 5: Solve for x
    x = 17,176,204,351.68/143,039.20
  6. Step 6: Final answer
    x = 120,080.40

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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.