Finding the Fourth Proportional to 82,118.49, 123,177.74 and 19,788.99
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Solution
The fourth proportional to 82,118.49, 123,177.74 and 19,788.99 is: 29,683.49
Step by Step Solution
- Step 1: Write the proportion equation
82,118.49 : 123,177.74 = 19,788.99 : x - Step 2: Convert to fraction form
82,118.49/123,177.74 = 19,788.99/x - Step 3: Cross multiply
82,118.49x = 123,177.74 × 19,788.99 - Step 4: Simplify right side
82,118.49x = 2,437,562,966.14 - Step 5: Solve for x
x = 2,437,562,966.14/82,118.49 - Step 6: Final answer
x = 29,683.49
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Similar ratio
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1.5x scale
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.