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Finding the Fourth Proportional to 136,765.33, 204,975.43 and 69,314.31

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Solution

The fourth proportional to 136,765.33, 204,975.43 and 69,314.31 is: 103,884.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,765.33 : 204,975.43 = 69,314.31 : x
  2. Step 2: Convert to fraction form
    136,765.33/204,975.43 = 69,314.31/x
  3. Step 3: Cross multiply
    136,765.33x = 204,975.43 × 69,314.31
  4. Step 4: Simplify right side
    136,765.33x = 14,207,730,324.12
  5. Step 5: Solve for x
    x = 14,207,730,324.12/136,765.33
  6. Step 6: Final answer
    x = 103,884.01

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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.