Finding the Fourth Proportional to 128,440.92, 177,244.12 and 71,082.66
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Solution
The fourth proportional to 128,440.92, 177,244.12 and 71,082.66 is: 98,091.66
Step by Step Solution
- Step 1: Write the proportion equation
128,440.92 : 177,244.12 = 71,082.66 : x - Step 2: Convert to fraction form
128,440.92/177,244.12 = 71,082.66/x - Step 3: Cross multiply
128,440.92x = 177,244.12 × 71,082.66 - Step 4: Simplify right side
128,440.92x = 12,598,983,518.96 - Step 5: Solve for x
x = 12,598,983,518.96/128,440.92 - Step 6: Final answer
x = 98,091.66
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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.