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Finding the Fourth Proportional to 133,990.08, 200,722.41 and 77,711.96

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Solution

The fourth proportional to 133,990.08, 200,722.41 and 77,711.96 is: 116,415.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,990.08 : 200,722.41 = 77,711.96 : x
  2. Step 2: Convert to fraction form
    133,990.08/200,722.41 = 77,711.96/x
  3. Step 3: Cross multiply
    133,990.08x = 200,722.41 × 77,711.96
  4. Step 4: Simplify right side
    133,990.08x = 15,598,530,893.41
  5. Step 5: Solve for x
    x = 15,598,530,893.41/133,990.08
  6. Step 6: Final answer
    x = 116,415.57

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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.