Finding the Fourth Proportional to 194,428.72, 291,633.36 and 76,121.74
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Solution
The fourth proportional to 194,428.72, 291,633.36 and 76,121.74 is: 114,178.80
Step by Step Solution
- Step 1: Write the proportion equation
194,428.72 : 291,633.36 = 76,121.74 : x - Step 2: Convert to fraction form
194,428.72/291,633.36 = 76,121.74/x - Step 3: Cross multiply
194,428.72x = 291,633.36 × 76,121.74 - Step 4: Simplify right side
194,428.72x = 22,199,638,805.25 - Step 5: Solve for x
x = 22,199,638,805.25/194,428.72 - Step 6: Final answer
x = 114,178.80
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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.