Finding the Fourth Proportional to 121,514.40, 167,622.48 and 71,203.68
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Solution
The fourth proportional to 121,514.40, 167,622.48 and 71,203.68 is: 98,221.59
Step by Step Solution
- Step 1: Write the proportion equation
121,514.40 : 167,622.48 = 71,203.68 : x - Step 2: Convert to fraction form
121,514.40/167,622.48 = 71,203.68/x - Step 3: Cross multiply
121,514.40x = 167,622.48 × 71,203.68 - Step 4: Simplify right side
121,514.40x = 11,935,337,426.73 - Step 5: Solve for x
x = 11,935,337,426.73/121,514.40 - Step 6: Final answer
x = 98,221.59
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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.