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Finding the Fourth Proportional to 135,344.22, 186,772.44 and 74,914.92

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Solution

The fourth proportional to 135,344.22, 186,772.44 and 74,914.92 is: 103,381.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,344.22 : 186,772.44 = 74,914.92 : x
  2. Step 2: Convert to fraction form
    135,344.22/186,772.44 = 74,914.92/x
  3. Step 3: Cross multiply
    135,344.22x = 186,772.44 × 74,914.92
  4. Step 4: Simplify right side
    135,344.22x = 13,992,042,400.80
  5. Step 5: Solve for x
    x = 13,992,042,400.80/135,344.22
  6. Step 6: Final answer
    x = 103,381.16

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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.