Finding the Fourth Proportional to 103,419.26, 155,129.30 and 68,351.12
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Solution
The fourth proportional to 103,419.26, 155,129.30 and 68,351.12 is: 102,526.95
Step by Step Solution
- Step 1: Write the proportion equation
103,419.26 : 155,129.30 = 68,351.12 : x - Step 2: Convert to fraction form
103,419.26/155,129.30 = 68,351.12/x - Step 3: Cross multiply
103,419.26x = 155,129.30 × 68,351.12 - Step 4: Simplify right side
103,419.26x = 10,603,261,399.82 - Step 5: Solve for x
x = 10,603,261,399.82/103,419.26 - Step 6: Final answer
x = 102,526.95
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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.