Finding the Fourth Proportional to 156,949.82, 216,589.68 and 85,329.84
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Solution
The fourth proportional to 156,949.82, 216,589.68 and 85,329.84 is: 117,754.60
Step by Step Solution
- Step 1: Write the proportion equation
156,949.82 : 216,589.68 = 85,329.84 : x - Step 2: Convert to fraction form
156,949.82/216,589.68 = 85,329.84/x - Step 3: Cross multiply
156,949.82x = 216,589.68 × 85,329.84 - Step 4: Simplify right side
156,949.82x = 18,481,562,740.05 - Step 5: Solve for x
x = 18,481,562,740.05/156,949.82 - Step 6: Final answer
x = 117,754.60
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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.