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Finding the Fourth Proportional to 135,474.50, 186,954.81 and 75,858.50

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Solution

The fourth proportional to 135,474.50, 186,954.81 and 75,858.50 is: 104,684.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,474.50 : 186,954.81 = 75,858.50 : x
  2. Step 2: Convert to fraction form
    135,474.50/186,954.81 = 75,858.50/x
  3. Step 3: Cross multiply
    135,474.50x = 186,954.81 × 75,858.50
  4. Step 4: Simplify right side
    135,474.50x = 14,182,111,454.39
  5. Step 5: Solve for x
    x = 14,182,111,454.39/135,474.50
  6. Step 6: Final answer
    x = 104,684.73

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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.