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Finding the Fourth Proportional to 135,190.53, 186,555.29 and 74,757.51

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Solution

The fourth proportional to 135,190.53, 186,555.29 and 74,757.51 is: 103,161.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,190.53 : 186,555.29 = 74,757.51 : x
  2. Step 2: Convert to fraction form
    135,190.53/186,555.29 = 74,757.51/x
  3. Step 3: Cross multiply
    135,190.53x = 186,555.29 × 74,757.51
  4. Step 4: Simplify right side
    135,190.53x = 13,946,408,583.94
  5. Step 5: Solve for x
    x = 13,946,408,583.94/135,190.53
  6. Step 6: Final answer
    x = 103,161.14

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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.