Finding the Fourth Proportional to 121,207.20, 167,289.30 and 73,486.68
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Solution
The fourth proportional to 121,207.20, 167,289.30 and 73,486.68 is: 101,425.78
Step by Step Solution
- Step 1: Write the proportion equation
121,207.20 : 167,289.30 = 73,486.68 : x - Step 2: Convert to fraction form
121,207.20/167,289.30 = 73,486.68/x - Step 3: Cross multiply
121,207.20x = 167,289.30 × 73,486.68 - Step 4: Simplify right side
121,207.20x = 12,293,535,256.52 - Step 5: Solve for x
x = 12,293,535,256.52/121,207.20 - Step 6: Final answer
x = 101,425.78
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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.