Finding the Fourth Proportional to 92,136.15, 138,476.88 and 76,442.99
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Solution
The fourth proportional to 92,136.15, 138,476.88 and 76,442.99 is: 114,890.69
Step by Step Solution
- Step 1: Write the proportion equation
92,136.15 : 138,476.88 = 76,442.99 : x - Step 2: Convert to fraction form
92,136.15/138,476.88 = 76,442.99/x - Step 3: Cross multiply
92,136.15x = 138,476.88 × 76,442.99 - Step 4: Simplify right side
92,136.15x = 10,585,586,060.69 - Step 5: Solve for x
x = 10,585,586,060.69/92,136.15 - Step 6: Final answer
x = 114,890.69
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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.