Finding the Fourth Proportional to 143,581.21, 215,043.76 and 68,753.91
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Solution
The fourth proportional to 143,581.21, 215,043.76 and 68,753.91 is: 102,973.78
Step by Step Solution
- Step 1: Write the proportion equation
143,581.21 : 215,043.76 = 68,753.91 : x - Step 2: Convert to fraction form
143,581.21/215,043.76 = 68,753.91/x - Step 3: Cross multiply
143,581.21x = 215,043.76 × 68,753.91 - Step 4: Simplify right side
143,581.21x = 14,785,100,213.46 - Step 5: Solve for x
x = 14,785,100,213.46/143,581.21 - Step 6: Final answer
x = 102,973.78
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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.