Finding the Fourth Proportional to 91,858,276.80, 137,787,415.20 and 82,504,915.20
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Solution
The fourth proportional to 91,858,276.80, 137,787,415.20 and 82,504,915.20 is: 123,757,372.80
Step by Step Solution
- Step 1: Write the proportion equation
91,858,276.80 : 137,787,415.20 = 82,504,915.20 : x - Step 2: Convert to fraction form
91,858,276.80/137,787,415.20 = 82,504,915.20/x - Step 3: Cross multiply
91,858,276.80x = 137,787,415.20 × 82,504,915.20 - Step 4: Simplify right side
91,858,276.80x = 11,368,139,006,703,190 - Step 5: Solve for x
x = 11,368,139,006,703,190/91,858,276.80 - Step 6: Final answer
x = 123,757,372.80
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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.