Finding the Fourth Proportional to 198,428.76, 273,823.81 and 107,782.88
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Solution
The fourth proportional to 198,428.76, 273,823.81 and 107,782.88 is: 148,736.09
Step by Step Solution
- Step 1: Write the proportion equation
198,428.76 : 273,823.81 = 107,782.88 : x - Step 2: Convert to fraction form
198,428.76/273,823.81 = 107,782.88/x - Step 3: Cross multiply
198,428.76x = 273,823.81 × 107,782.88 - Step 4: Simplify right side
198,428.76x = 29,513,517,215.80 - Step 5: Solve for x
x = 29,513,517,215.80/198,428.76 - Step 6: Final answer
x = 148,736.09
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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.