Finding the Fourth Proportional to 126,916.62, 190,391.70 and 46,943.70
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Solution
The fourth proportional to 126,916.62, 190,391.70 and 46,943.70 is: 70,421.75
Step by Step Solution
- Step 1: Write the proportion equation
126,916.62 : 190,391.70 = 46,943.70 : x - Step 2: Convert to fraction form
126,916.62/190,391.70 = 46,943.70/x - Step 3: Cross multiply
126,916.62x = 190,391.70 × 46,943.70 - Step 4: Simplify right side
126,916.62x = 8,937,690,847.29 - Step 5: Solve for x
x = 8,937,690,847.29/126,916.62 - Step 6: Final answer
x = 70,421.75
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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.