Finding the Fourth Proportional to 156,912.12, 216,516.12 and 92,342.94
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Solution
The fourth proportional to 156,912.12, 216,516.12 and 92,342.94 is: 127,419.95
Step by Step Solution
- Step 1: Write the proportion equation
156,912.12 : 216,516.12 = 92,342.94 : x - Step 2: Convert to fraction form
156,912.12/216,516.12 = 92,342.94/x - Step 3: Cross multiply
156,912.12x = 216,516.12 × 92,342.94 - Step 4: Simplify right side
156,912.12x = 19,993,735,078.19 - Step 5: Solve for x
x = 19,993,735,078.19/156,912.12 - Step 6: Final answer
x = 127,419.95
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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.