Finding the Fourth Proportional to 129,640,505.80, 194,460,758.70 and 107,245,625.80
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Solution
The fourth proportional to 129,640,505.80, 194,460,758.70 and 107,245,625.80 is: 160,868,438.70
Step by Step Solution
- Step 1: Write the proportion equation
129,640,505.80 : 194,460,758.70 = 107,245,625.80 : x - Step 2: Convert to fraction form
129,640,505.80/194,460,758.70 = 107,245,625.80/x - Step 3: Cross multiply
129,640,505.80x = 194,460,758.70 × 107,245,625.80 - Step 4: Simplify right side
129,640,505.80x = 20,855,065,760,324,292 - Step 5: Solve for x
x = 20,855,065,760,324,292/129,640,505.80 - Step 6: Final answer
x = 160,868,438.70
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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.