Finding the Fourth Proportional to 136,868.50, 188,878.62 and 77,252.50
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Solution
The fourth proportional to 136,868.50, 188,878.62 and 77,252.50 is: 106,608.50
Step by Step Solution
- Step 1: Write the proportion equation
136,868.50 : 188,878.62 = 77,252.50 : x - Step 2: Convert to fraction form
136,868.50/188,878.62 = 77,252.50/x - Step 3: Cross multiply
136,868.50x = 188,878.62 × 77,252.50 - Step 4: Simplify right side
136,868.50x = 14,591,345,591.55 - Step 5: Solve for x
x = 14,591,345,591.55/136,868.50 - Step 6: Final answer
x = 106,608.50
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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.