Finding the Fourth Proportional to 115,639.26, 159,608.85 and 75,282.75
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Solution
The fourth proportional to 115,639.26, 159,608.85 and 75,282.75 is: 103,907.56
Step by Step Solution
- Step 1: Write the proportion equation
115,639.26 : 159,608.85 = 75,282.75 : x - Step 2: Convert to fraction form
115,639.26/159,608.85 = 75,282.75/x - Step 3: Cross multiply
115,639.26x = 159,608.85 × 75,282.75 - Step 4: Simplify right side
115,639.26x = 12,015,793,152.34 - Step 5: Solve for x
x = 12,015,793,152.34/115,639.26 - Step 6: Final answer
x = 103,907.56
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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.