Finding the Fourth Proportional to 210,905.81, 316,391.70 and 68,718.08
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Solution
The fourth proportional to 210,905.81, 316,391.70 and 68,718.08 is: 103,087.87
Step by Step Solution
- Step 1: Write the proportion equation
210,905.81 : 316,391.70 = 68,718.08 : x - Step 2: Convert to fraction form
210,905.81/316,391.70 = 68,718.08/x - Step 3: Cross multiply
210,905.81x = 316,391.70 × 68,718.08 - Step 4: Simplify right side
210,905.81x = 21,741,830,151.94 - Step 5: Solve for x
x = 21,741,830,151.94/210,905.81 - Step 6: Final answer
x = 103,087.87
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.