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Finding the Fourth Proportional to 133,998.60, 200,706.30 and 81,316.20

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Solution

The fourth proportional to 133,998.60, 200,706.30 and 81,316.20 is: 121,797.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,998.60 : 200,706.30 = 81,316.20 : x
  2. Step 2: Convert to fraction form
    133,998.60/200,706.30 = 81,316.20/x
  3. Step 3: Cross multiply
    133,998.60x = 200,706.30 × 81,316.20
  4. Step 4: Simplify right side
    133,998.60x = 16,320,673,632.06
  5. Step 5: Solve for x
    x = 16,320,673,632.06/133,998.60
  6. Step 6: Final answer
    x = 121,797.34

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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.