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Finding the Fourth Proportional to 135,986.94, 203,910.01 and 61,042.55

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Solution

The fourth proportional to 135,986.94, 203,910.01 and 61,042.55 is: 91,532.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,986.94 : 203,910.01 = 61,042.55 : x
  2. Step 2: Convert to fraction form
    135,986.94/203,910.01 = 61,042.55/x
  3. Step 3: Cross multiply
    135,986.94x = 203,910.01 × 61,042.55
  4. Step 4: Simplify right side
    135,986.94x = 12,447,186,980.93
  5. Step 5: Solve for x
    x = 12,447,186,980.93/135,986.94
  6. Step 6: Final answer
    x = 91,532.22

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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.