Finding the Fourth Proportional to 120,782.19, 166,694.79 and 73,035.88
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Solution
The fourth proportional to 120,782.19, 166,694.79 and 73,035.88 is: 100,798.81
Step by Step Solution
- Step 1: Write the proportion equation
120,782.19 : 166,694.79 = 73,035.88 : x - Step 2: Convert to fraction form
120,782.19/166,694.79 = 73,035.88/x - Step 3: Cross multiply
120,782.19x = 166,694.79 × 73,035.88 - Step 4: Simplify right side
120,782.19x = 12,174,700,536.21 - Step 5: Solve for x
x = 12,174,700,536.21/120,782.19 - Step 6: Final answer
x = 100,798.81
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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.