Finding the Fourth Proportional to 117,687.20, 176,530.80 and 82,257.80
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Solution
The fourth proportional to 117,687.20, 176,530.80 and 82,257.80 is: 123,386.70
Step by Step Solution
- Step 1: Write the proportion equation
117,687.20 : 176,530.80 = 82,257.80 : x - Step 2: Convert to fraction form
117,687.20/176,530.80 = 82,257.80/x - Step 3: Cross multiply
117,687.20x = 176,530.80 × 82,257.80 - Step 4: Simplify right side
117,687.20x = 14,521,035,240.24 - Step 5: Solve for x
x = 14,521,035,240.24/117,687.20 - Step 6: Final answer
x = 123,386.70
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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.