Finding the Fourth Proportional to 196,678.11, 271,154.46 and 128,577.99
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Solution
The fourth proportional to 196,678.11, 271,154.46 and 128,577.99 is: 177,266.79
Step by Step Solution
- Step 1: Write the proportion equation
196,678.11 : 271,154.46 = 128,577.99 : x - Step 2: Convert to fraction form
196,678.11/271,154.46 = 128,577.99/x - Step 3: Cross multiply
196,678.11x = 271,154.46 × 128,577.99 - Step 4: Simplify right side
196,678.11x = 34,864,495,446.34 - Step 5: Solve for x
x = 34,864,495,446.34/196,678.11 - Step 6: Final answer
x = 177,266.79
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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.