Finding the Fourth Proportional to 186,728.40, 257,660.87 and 106,154.19
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Solution
The fourth proportional to 186,728.40, 257,660.87 and 106,154.19 is: 146,478.95
Step by Step Solution
- Step 1: Write the proportion equation
186,728.40 : 257,660.87 = 106,154.19 : x - Step 2: Convert to fraction form
186,728.40/257,660.87 = 106,154.19/x - Step 3: Cross multiply
186,728.40x = 257,660.87 × 106,154.19 - Step 4: Simplify right side
186,728.40x = 27,351,780,418.77 - Step 5: Solve for x
x = 27,351,780,418.77/186,728.40 - Step 6: Final answer
x = 146,478.95
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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.