Finding the Fourth Proportional to 186,915.70, 257,940.35 and 106,341.49
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Solution
The fourth proportional to 186,915.70, 257,940.35 and 106,341.49 is: 146,749.37
Step by Step Solution
- Step 1: Write the proportion equation
186,915.70 : 257,940.35 = 106,341.49 : x - Step 2: Convert to fraction form
186,915.70/257,940.35 = 106,341.49/x - Step 3: Cross multiply
186,915.70x = 257,940.35 × 106,341.49 - Step 4: Simplify right side
186,915.70x = 27,429,761,339.62 - Step 5: Solve for x
x = 27,429,761,339.62/186,915.70 - Step 6: Final answer
x = 146,749.37
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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.