Finding the Fourth Proportional to 128,806.94, 177,717.24 and 83,486.84
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Solution
The fourth proportional to 128,806.94, 177,717.24 and 83,486.84 is: 115,188.28
Step by Step Solution
- Step 1: Write the proportion equation
128,806.94 : 177,717.24 = 83,486.84 : x - Step 2: Convert to fraction form
128,806.94/177,717.24 = 83,486.84/x - Step 3: Cross multiply
128,806.94x = 177,717.24 × 83,486.84 - Step 4: Simplify right side
128,806.94x = 14,837,049,892.54 - Step 5: Solve for x
x = 14,837,049,892.54/128,806.94 - Step 6: Final answer
x = 115,188.28
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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.