Finding the Fourth Proportional to 103,612.64, 155,418.96 and 68,544.09
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Solution
The fourth proportional to 103,612.64, 155,418.96 and 68,544.09 is: 102,816.14
Step by Step Solution
- Step 1: Write the proportion equation
103,612.64 : 155,418.96 = 68,544.09 : x - Step 2: Convert to fraction form
103,612.64/155,418.96 = 68,544.09/x - Step 3: Cross multiply
103,612.64x = 155,418.96 × 68,544.09 - Step 4: Simplify right side
103,612.64x = 10,653,050,839.23 - Step 5: Solve for x
x = 10,653,050,839.23/103,612.64 - Step 6: Final answer
x = 102,816.14
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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.