Finding the Fourth Proportional to 91,137.80, 136,706.70 and 82,827.20
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Solution
The fourth proportional to 91,137.80, 136,706.70 and 82,827.20 is: 124,240.80
Step by Step Solution
- Step 1: Write the proportion equation
91,137.80 : 136,706.70 = 82,827.20 : x - Step 2: Convert to fraction form
91,137.80/136,706.70 = 82,827.20/x - Step 3: Cross multiply
91,137.80x = 136,706.70 × 82,827.20 - Step 4: Simplify right side
91,137.80x = 11,323,033,182.24 - Step 5: Solve for x
x = 11,323,033,182.24/91,137.80 - Step 6: Final answer
x = 124,240.80
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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.