Finding the Fourth Proportional to 196,865.80, 271,580.34 and 128,852.84
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Solution
The fourth proportional to 196,865.80, 271,580.34 and 128,852.84 is: 177,755.09
Step by Step Solution
- Step 1: Write the proportion equation
196,865.80 : 271,580.34 = 128,852.84 : x - Step 2: Convert to fraction form
196,865.80/271,580.34 = 128,852.84/x - Step 3: Cross multiply
196,865.80x = 271,580.34 × 128,852.84 - Step 4: Simplify right side
196,865.80x = 34,993,898,097.17 - Step 5: Solve for x
x = 34,993,898,097.17/196,865.80 - Step 6: Final answer
x = 177,755.09
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1.5x scale
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.