Finding the Fourth Proportional to 178,678.26, 267,769.26 and 78,688.62
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Solution
The fourth proportional to 178,678.26, 267,769.26 and 78,688.62 is: 117,923.66
Step by Step Solution
- Step 1: Write the proportion equation
178,678.26 : 267,769.26 = 78,688.62 : x - Step 2: Convert to fraction form
178,678.26/267,769.26 = 78,688.62/x - Step 3: Cross multiply
178,678.26x = 267,769.26 × 78,688.62 - Step 4: Simplify right side
178,678.26x = 21,070,393,547.82 - Step 5: Solve for x
x = 21,070,393,547.82/178,678.26 - Step 6: Final answer
x = 117,923.66
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.