Finding the Fourth Proportional to 212,625.63, 318,940.84 and 91,029.80
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Solution
The fourth proportional to 212,625.63, 318,940.84 and 91,029.80 is: 136,545.72
Step by Step Solution
- Step 1: Write the proportion equation
212,625.63 : 318,940.84 = 91,029.80 : x - Step 2: Convert to fraction form
212,625.63/318,940.84 = 91,029.80/x - Step 3: Cross multiply
212,625.63x = 318,940.84 × 91,029.80 - Step 4: Simplify right side
212,625.63x = 29,033,120,891.15 - Step 5: Solve for x
x = 29,033,120,891.15/212,625.63 - Step 6: Final answer
x = 136,545.72
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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.