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Finding the Fourth Proportional to 135,812.57, 203,845.82 and 69,300.50

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Solution

The fourth proportional to 135,812.57, 203,845.82 and 69,300.50 is: 104,015.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,812.57 : 203,845.82 = 69,300.50 : x
  2. Step 2: Convert to fraction form
    135,812.57/203,845.82 = 69,300.50/x
  3. Step 3: Cross multiply
    135,812.57x = 203,845.82 × 69,300.50
  4. Step 4: Simplify right side
    135,812.57x = 14,126,615,883.18
  5. Step 5: Solve for x
    x = 14,126,615,883.18/135,812.57
  6. Step 6: Final answer
    x = 104,015.53

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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.