Finding the Fourth Proportional to 154,976.07, 213,859.58 and 86,984.67
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Solution
The fourth proportional to 154,976.07, 213,859.58 and 86,984.67 is: 120,034.69
Step by Step Solution
- Step 1: Write the proportion equation
154,976.07 : 213,859.58 = 86,984.67 : x - Step 2: Convert to fraction form
154,976.07/213,859.58 = 86,984.67/x - Step 3: Cross multiply
154,976.07x = 213,859.58 × 86,984.67 - Step 4: Simplify right side
154,976.07x = 18,602,504,992.64 - Step 5: Solve for x
x = 18,602,504,992.64/154,976.07 - Step 6: Final answer
x = 120,034.69
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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.