Finding the Fourth Proportional to 115,636.26, 159,604.71 and 75,279.75
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Solution
The fourth proportional to 115,636.26, 159,604.71 and 75,279.75 is: 103,903.42
Step by Step Solution
- Step 1: Write the proportion equation
115,636.26 : 159,604.71 = 75,279.75 : x - Step 2: Convert to fraction form
115,636.26/159,604.71 = 75,279.75/x - Step 3: Cross multiply
115,636.26x = 159,604.71 × 75,279.75 - Step 4: Simplify right side
115,636.26x = 12,015,002,667.62 - Step 5: Solve for x
x = 12,015,002,667.62/115,636.26 - Step 6: Final answer
x = 103,903.42
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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.