Finding the Fourth Proportional to 103,619.21, 155,428.80 and 68,550.66
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Solution
The fourth proportional to 103,619.21, 155,428.80 and 68,550.66 is: 102,825.99
Step by Step Solution
- Step 1: Write the proportion equation
103,619.21 : 155,428.80 = 68,550.66 : x - Step 2: Convert to fraction form
103,619.21/155,428.80 = 68,550.66/x - Step 3: Cross multiply
103,619.21x = 155,428.80 × 68,550.66 - Step 4: Simplify right side
103,619.21x = 10,654,746,823.01 - Step 5: Solve for x
x = 10,654,746,823.01/103,619.21 - Step 6: Final answer
x = 102,825.99
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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.