Finding the Fourth Proportional to 157,042.62, 216,716.58 and 85,423.23
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Solution
The fourth proportional to 157,042.62, 216,716.58 and 85,423.23 is: 117,882.84
Step by Step Solution
- Step 1: Write the proportion equation
157,042.62 : 216,716.58 = 85,423.23 : x - Step 2: Convert to fraction form
157,042.62/216,716.58 = 85,423.23/x - Step 3: Cross multiply
157,042.62x = 216,716.58 × 85,423.23 - Step 4: Simplify right side
157,042.62x = 18,512,630,258.15 - Step 5: Solve for x
x = 18,512,630,258.15/157,042.62 - Step 6: Final answer
x = 117,882.84
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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.