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Finding the Fourth Proportional to 135,932.70, 203,899.05 and 100,940.70

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Solution

The fourth proportional to 135,932.70, 203,899.05 and 100,940.70 is: 151,411.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,932.70 : 203,899.05 = 100,940.70 : x
  2. Step 2: Convert to fraction form
    135,932.70/203,899.05 = 100,940.70/x
  3. Step 3: Cross multiply
    135,932.70x = 203,899.05 × 100,940.70
  4. Step 4: Simplify right side
    135,932.70x = 20,581,712,836.34
  5. Step 5: Solve for x
    x = 20,581,712,836.34/135,932.70
  6. Step 6: Final answer
    x = 151,411.05

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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.