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Finding the Fourth Proportional to 135,905.80, 203,858.70 and 36,081.40

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Solution

The fourth proportional to 135,905.80, 203,858.70 and 36,081.40 is: 54,122.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,905.80 : 203,858.70 = 36,081.40 : x
  2. Step 2: Convert to fraction form
    135,905.80/203,858.70 = 36,081.40/x
  3. Step 3: Cross multiply
    135,905.80x = 203,858.70 × 36,081.40
  4. Step 4: Simplify right side
    135,905.80x = 7,355,507,298.18
  5. Step 5: Solve for x
    x = 7,355,507,298.18/135,905.80
  6. Step 6: Final answer
    x = 54,122.10

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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.