Finding the Fourth Proportional to 186,689.75, 257,621.72 and 106,106.09
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Solution
The fourth proportional to 186,689.75, 257,621.72 and 106,106.09 is: 146,420.64
Step by Step Solution
- Step 1: Write the proportion equation
186,689.75 : 257,621.72 = 106,106.09 : x - Step 2: Convert to fraction form
186,689.75/257,621.72 = 106,106.09/x - Step 3: Cross multiply
186,689.75x = 257,621.72 × 106,106.09 - Step 4: Simplify right side
186,689.75x = 27,335,231,589.64 - Step 5: Solve for x
x = 27,335,231,589.64/186,689.75 - Step 6: Final answer
x = 146,420.64
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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.