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Finding the Fourth Proportional to 200,069.36, 300,104.32 and 81,740.80

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Solution

The fourth proportional to 200,069.36, 300,104.32 and 81,740.80 is: 122,611.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,069.36 : 300,104.32 = 81,740.80 : x
  2. Step 2: Convert to fraction form
    200,069.36/300,104.32 = 81,740.80/x
  3. Step 3: Cross multiply
    200,069.36x = 300,104.32 × 81,740.80
  4. Step 4: Simplify right side
    200,069.36x = 24,530,767,200.26
  5. Step 5: Solve for x
    x = 24,530,767,200.26/200,069.36
  6. Step 6: Final answer
    x = 122,611.31

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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.