Finding the Fourth Proportional to 143,946.40, 198,581.79 and 83,481.99
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Solution
The fourth proportional to 143,946.40, 198,581.79 and 83,481.99 is: 115,167.89
Step by Step Solution
- Step 1: Write the proportion equation
143,946.40 : 198,581.79 = 83,481.99 : x - Step 2: Convert to fraction form
143,946.40/198,581.79 = 83,481.99/x - Step 3: Cross multiply
143,946.40x = 198,581.79 × 83,481.99 - Step 4: Simplify right side
143,946.40x = 16,578,003,006.96 - Step 5: Solve for x
x = 16,578,003,006.96/143,946.40 - Step 6: Final answer
x = 115,167.89
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1.5x scale
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.