Finding the Fourth Proportional to 156,894.62, 216,516.26 and 85,274.66
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Solution
The fourth proportional to 156,894.62, 216,516.26 and 85,274.66 is: 117,679.95
Step by Step Solution
- Step 1: Write the proportion equation
156,894.62 : 216,516.26 = 85,274.66 : x - Step 2: Convert to fraction form
156,894.62/216,516.26 = 85,274.66/x - Step 3: Cross multiply
156,894.62x = 216,516.26 × 85,274.66 - Step 4: Simplify right side
156,894.62x = 18,463,350,455.97 - Step 5: Solve for x
x = 18,463,350,455.97/156,894.62 - Step 6: Final answer
x = 117,679.95
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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.