Finding the Fourth Proportional to 151,515.90, 209,045.61 and 87,840.99
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Solution
The fourth proportional to 151,515.90, 209,045.61 and 87,840.99 is: 121,193.70
Step by Step Solution
- Step 1: Write the proportion equation
151,515.90 : 209,045.61 = 87,840.99 : x - Step 2: Convert to fraction form
151,515.90/209,045.61 = 87,840.99/x - Step 3: Cross multiply
151,515.90x = 209,045.61 × 87,840.99 - Step 4: Simplify right side
151,515.90x = 18,362,773,172.85 - Step 5: Solve for x
x = 18,362,773,172.85/151,515.90 - Step 6: Final answer
x = 121,193.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.