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Finding the Fourth Proportional to 138,863.92, 208,293.81 and 33,683.80

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Solution

The fourth proportional to 138,863.92, 208,293.81 and 33,683.80 is: 50,525.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,863.92 : 208,293.81 = 33,683.80 : x
  2. Step 2: Convert to fraction form
    138,863.92/208,293.81 = 33,683.80/x
  3. Step 3: Cross multiply
    138,863.92x = 208,293.81 × 33,683.80
  4. Step 4: Simplify right side
    138,863.92x = 7,016,127,037.28
  5. Step 5: Solve for x
    x = 7,016,127,037.28/138,863.92
  6. Step 6: Final answer
    x = 50,525.20

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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.