Finding the Fourth Proportional to 140,377.05, 193,717.26 and 79,122.81
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Solution
The fourth proportional to 140,377.05, 193,717.26 and 79,122.81 is: 109,187.75
Step by Step Solution
- Step 1: Write the proportion equation
140,377.05 : 193,717.26 = 79,122.81 : x - Step 2: Convert to fraction form
140,377.05/193,717.26 = 79,122.81/x - Step 3: Cross multiply
140,377.05x = 193,717.26 × 79,122.81 - Step 4: Simplify right side
140,377.05x = 15,327,453,956.70 - Step 5: Solve for x
x = 15,327,453,956.70/140,377.05 - Step 6: Final answer
x = 109,187.75
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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.