Finding the Fourth Proportional to 193,136.80, 289,618.80 and 74,768.80
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Solution
The fourth proportional to 193,136.80, 289,618.80 and 74,768.80 is: 112,119.75
Step by Step Solution
- Step 1: Write the proportion equation
193,136.80 : 289,618.80 = 74,768.80 : x - Step 2: Convert to fraction form
193,136.80/289,618.80 = 74,768.80/x - Step 3: Cross multiply
193,136.80x = 289,618.80 × 74,768.80 - Step 4: Simplify right side
193,136.80x = 21,654,450,133.44 - Step 5: Solve for x
x = 21,654,450,133.44/193,136.80 - Step 6: Final answer
x = 112,119.75
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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.