Finding the Fourth Proportional to 140,523.98, 193,927.70 and 76,861.78
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Solution
The fourth proportional to 140,523.98, 193,927.70 and 76,861.78 is: 106,071.78
Step by Step Solution
- Step 1: Write the proportion equation
140,523.98 : 193,927.70 = 76,861.78 : x - Step 2: Convert to fraction form
140,523.98/193,927.70 = 76,861.78/x - Step 3: Cross multiply
140,523.98x = 193,927.70 × 76,861.78 - Step 4: Simplify right side
140,523.98x = 14,905,628,213.31 - Step 5: Solve for x
x = 14,905,628,213.31/140,523.98 - Step 6: Final answer
x = 106,071.78
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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.