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Finding the Fourth Proportional to 135,532.72, 203,485.27 and 69,017.54

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Solution

The fourth proportional to 135,532.72, 203,485.27 and 69,017.54 is: 103,621.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,532.72 : 203,485.27 = 69,017.54 : x
  2. Step 2: Convert to fraction form
    135,532.72/203,485.27 = 69,017.54/x
  3. Step 3: Cross multiply
    135,532.72x = 203,485.27 × 69,017.54
  4. Step 4: Simplify right side
    135,532.72x = 14,044,052,761.64
  5. Step 5: Solve for x
    x = 14,044,052,761.64/135,532.72
  6. Step 6: Final answer
    x = 103,621.13

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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.