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Finding the Fourth Proportional to 135,620.20, 203,430.30 and 65,506.60

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Solution

The fourth proportional to 135,620.20, 203,430.30 and 65,506.60 is: 98,259.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,620.20 : 203,430.30 = 65,506.60 : x
  2. Step 2: Convert to fraction form
    135,620.20/203,430.30 = 65,506.60/x
  3. Step 3: Cross multiply
    135,620.20x = 203,430.30 × 65,506.60
  4. Step 4: Simplify right side
    135,620.20x = 13,326,027,289.98
  5. Step 5: Solve for x
    x = 13,326,027,289.98/135,620.20
  6. Step 6: Final answer
    x = 98,259.90

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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.