Finding the Fourth Proportional to 186,126.66, 257,004.09 and 129,439.62
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Solution
The fourth proportional to 186,126.66, 257,004.09 and 129,439.62 is: 178,730.50
Step by Step Solution
- Step 1: Write the proportion equation
186,126.66 : 257,004.09 = 129,439.62 : x - Step 2: Convert to fraction form
186,126.66/257,004.09 = 129,439.62/x - Step 3: Cross multiply
186,126.66x = 257,004.09 × 129,439.62 - Step 4: Simplify right side
186,126.66x = 33,266,511,748.05 - Step 5: Solve for x
x = 33,266,511,748.05/186,126.66 - Step 6: Final answer
x = 178,730.50
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1.5x scale
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.