Home / 199,984.82-299,992.68-66,865.64

Finding the Fourth Proportional to 199,984.82, 299,992.68 and 66,865.64

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Solution

The fourth proportional to 199,984.82, 299,992.68 and 66,865.64 is: 100,303.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,984.82 : 299,992.68 = 66,865.64 : x
  2. Step 2: Convert to fraction form
    199,984.82/299,992.68 = 66,865.64/x
  3. Step 3: Cross multiply
    199,984.82x = 299,992.68 × 66,865.64
  4. Step 4: Simplify right side
    199,984.82x = 20,059,201,043.55
  5. Step 5: Solve for x
    x = 20,059,201,043.55/199,984.82
  6. Step 6: Final answer
    x = 100,303.62

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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.