Finding the Fourth Proportional to 115,158.76, 158,919.42 and 66,770.08
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Solution
The fourth proportional to 115,158.76, 158,919.42 and 66,770.08 is: 92,142.90
Step by Step Solution
- Step 1: Write the proportion equation
115,158.76 : 158,919.42 = 66,770.08 : x - Step 2: Convert to fraction form
115,158.76/158,919.42 = 66,770.08/x - Step 3: Cross multiply
115,158.76x = 158,919.42 × 66,770.08 - Step 4: Simplify right side
115,158.76x = 10,611,062,386.95 - Step 5: Solve for x
x = 10,611,062,386.95/115,158.76 - Step 6: Final answer
x = 92,142.90
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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.