Finding the Fourth Proportional to 213,071.05, 319,523.50 and 79,878.63
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Solution
The fourth proportional to 213,071.05, 319,523.50 and 79,878.63 is: 119,786.80
Step by Step Solution
- Step 1: Write the proportion equation
213,071.05 : 319,523.50 = 79,878.63 : x - Step 2: Convert to fraction form
213,071.05/319,523.50 = 79,878.63/x - Step 3: Cross multiply
213,071.05x = 319,523.50 × 79,878.63 - Step 4: Simplify right side
213,071.05x = 25,523,099,432.81 - Step 5: Solve for x
x = 25,523,099,432.81/213,071.05 - Step 6: Final answer
x = 119,786.80
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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.