Home / 138,665.28-207,997.76-45,170.88

Finding the Fourth Proportional to 138,665.28, 207,997.76 and 45,170.88

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Solution

The fourth proportional to 138,665.28, 207,997.76 and 45,170.88 is: 67,756.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,665.28 : 207,997.76 = 45,170.88 : x
  2. Step 2: Convert to fraction form
    138,665.28/207,997.76 = 45,170.88/x
  3. Step 3: Cross multiply
    138,665.28x = 207,997.76 × 45,170.88
  4. Step 4: Simplify right side
    138,665.28x = 9,395,441,857.23
  5. Step 5: Solve for x
    x = 9,395,441,857.23/138,665.28
  6. Step 6: Final answer
    x = 67,756.27

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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.