Finding the Fourth Proportional to 149,049.18, 205,711.74 and 87,805.26
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Solution
The fourth proportional to 149,049.18, 205,711.74 and 87,805.26 is: 121,185.32
Step by Step Solution
- Step 1: Write the proportion equation
149,049.18 : 205,711.74 = 87,805.26 : x - Step 2: Convert to fraction form
149,049.18/205,711.74 = 87,805.26/x - Step 3: Cross multiply
149,049.18x = 205,711.74 × 87,805.26 - Step 4: Simplify right side
149,049.18x = 18,062,572,815.75 - Step 5: Solve for x
x = 18,062,572,815.75/149,049.18 - Step 6: Final answer
x = 121,185.32
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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.