Finding the Fourth Proportional to 199,766.28, 275,716.20 and 128,236.80
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Solution
The fourth proportional to 199,766.28, 275,716.20 and 128,236.80 is: 176,991.65
Step by Step Solution
- Step 1: Write the proportion equation
199,766.28 : 275,716.20 = 128,236.80 : x - Step 2: Convert to fraction form
199,766.28/275,716.20 = 128,236.80/x - Step 3: Cross multiply
199,766.28x = 275,716.20 × 128,236.80 - Step 4: Simplify right side
199,766.28x = 35,356,963,196.16 - Step 5: Solve for x
x = 35,356,963,196.16/199,766.28 - Step 6: Final answer
x = 176,991.65
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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.