Finding the Fourth Proportional to 196,864.81, 271,578.95 and 128,851.84
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Solution
The fourth proportional to 196,864.81, 271,578.95 and 128,851.84 is: 177,753.70
Step by Step Solution
- Step 1: Write the proportion equation
196,864.81 : 271,578.95 = 128,851.84 : x - Step 2: Convert to fraction form
196,864.81/271,578.95 = 128,851.84/x - Step 3: Cross multiply
196,864.81x = 271,578.95 × 128,851.84 - Step 4: Simplify right side
196,864.81x = 34,993,447,412.77 - Step 5: Solve for x
x = 34,993,447,412.77/196,864.81 - Step 6: Final answer
x = 177,753.70
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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.