Finding the Fourth Proportional to 138,026.80, 206,602.80 and 98,660.80
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Solution
The fourth proportional to 138,026.80, 206,602.80 and 98,660.80 is: 147,678.55
Step by Step Solution
- Step 1: Write the proportion equation
138,026.80 : 206,602.80 = 98,660.80 : x - Step 2: Convert to fraction form
138,026.80/206,602.80 = 98,660.80/x - Step 3: Cross multiply
138,026.80x = 206,602.80 × 98,660.80 - Step 4: Simplify right side
138,026.80x = 20,383,597,530.24 - Step 5: Solve for x
x = 20,383,597,530.24/138,026.80 - Step 6: Final answer
x = 147,678.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.