Finding the Fourth Proportional to 198,138.19, 273,430.67 and 113,257.08
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Solution
The fourth proportional to 198,138.19, 273,430.67 and 113,257.08 is: 156,294.75
Step by Step Solution
- Step 1: Write the proportion equation
198,138.19 : 273,430.67 = 113,257.08 : x - Step 2: Convert to fraction form
198,138.19/273,430.67 = 113,257.08/x - Step 3: Cross multiply
198,138.19x = 273,430.67 × 113,257.08 - Step 4: Simplify right side
198,138.19x = 30,967,959,266.64 - Step 5: Solve for x
x = 30,967,959,266.64/198,138.19 - Step 6: Final answer
x = 156,294.75
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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.