Finding the Fourth Proportional to 154,945.21, 213,797.39 and 86,965.05
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Solution
The fourth proportional to 154,945.21, 213,797.39 and 86,965.05 is: 119,996.61
Step by Step Solution
- Step 1: Write the proportion equation
154,945.21 : 213,797.39 = 86,965.05 : x - Step 2: Convert to fraction form
154,945.21/213,797.39 = 86,965.05/x - Step 3: Cross multiply
154,945.21x = 213,797.39 × 86,965.05 - Step 4: Simplify right side
154,945.21x = 18,592,900,364.70 - Step 5: Solve for x
x = 18,592,900,364.70/154,945.21 - Step 6: Final answer
x = 119,996.61
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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.