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Finding the Fourth Proportional to 135,066, 186,391.08 and 75,450

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Solution

The fourth proportional to 135,066, 186,391.08 and 75,450 is: 104,121.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,066 : 186,391.08 = 75,450 : x
  2. Step 2: Convert to fraction form
    135,066/186,391.08 = 75,450/x
  3. Step 3: Cross multiply
    135,066x = 186,391.08 × 75,450
  4. Step 4: Simplify right side
    135,066x = 14,063,206,986.00
  5. Step 5: Solve for x
    x = 14,063,206,986.00/135,066
  6. Step 6: Final answer
    x = 104,121.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.