Finding the Fourth Proportional to 221,674.98, 305,911.80 and 126,181.68
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Solution
The fourth proportional to 221,674.98, 305,911.80 and 126,181.68 is: 174,130.90
Step by Step Solution
- Step 1: Write the proportion equation
221,674.98 : 305,911.80 = 126,181.68 : x - Step 2: Convert to fraction form
221,674.98/305,911.80 = 126,181.68/x - Step 3: Cross multiply
221,674.98x = 305,911.80 × 126,181.68 - Step 4: Simplify right side
221,674.98x = 38,600,464,855.82 - Step 5: Solve for x
x = 38,600,464,855.82/221,674.98 - Step 6: Final answer
x = 174,130.90
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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.