Finding the Fourth Proportional to 210,795.62, 316,193.97 and 86,136.62
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Solution
The fourth proportional to 210,795.62, 316,193.97 and 86,136.62 is: 129,205.15
Step by Step Solution
- Step 1: Write the proportion equation
210,795.62 : 316,193.97 = 86,136.62 : x - Step 2: Convert to fraction form
210,795.62/316,193.97 = 86,136.62/x - Step 3: Cross multiply
210,795.62x = 316,193.97 × 86,136.62 - Step 4: Simplify right side
210,795.62x = 27,235,879,840.18 - Step 5: Solve for x
x = 27,235,879,840.18/210,795.62 - Step 6: Final answer
x = 129,205.15
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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.