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Finding the Fourth Proportional to 138,327.60, 207,491.40 and 133,516.20

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Solution

The fourth proportional to 138,327.60, 207,491.40 and 133,516.20 is: 200,274.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,327.60 : 207,491.40 = 133,516.20 : x
  2. Step 2: Convert to fraction form
    138,327.60/207,491.40 = 133,516.20/x
  3. Step 3: Cross multiply
    138,327.60x = 207,491.40 × 133,516.20
  4. Step 4: Simplify right side
    138,327.60x = 27,703,463,260.68
  5. Step 5: Solve for x
    x = 27,703,463,260.68/138,327.60
  6. Step 6: Final answer
    x = 200,274.30

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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.