Finding the Fourth Proportional to 156,644.14, 216,163.14 and 85,022.63
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Solution
The fourth proportional to 156,644.14, 216,163.14 and 85,022.63 is: 117,328.09
Step by Step Solution
- Step 1: Write the proportion equation
156,644.14 : 216,163.14 = 85,022.63 : x - Step 2: Convert to fraction form
156,644.14/216,163.14 = 85,022.63/x - Step 3: Cross multiply
156,644.14x = 216,163.14 × 85,022.63 - Step 4: Simplify right side
156,644.14x = 18,378,757,378.49 - Step 5: Solve for x
x = 18,378,757,378.49/156,644.14 - Step 6: Final answer
x = 117,328.09
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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.