Finding the Fourth Proportional to 121,553.30, 167,739.18 and 76,255.68
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Solution
The fourth proportional to 121,553.30, 167,739.18 and 76,255.68 is: 105,230.09
Step by Step Solution
- Step 1: Write the proportion equation
121,553.30 : 167,739.18 = 76,255.68 : x - Step 2: Convert to fraction form
121,553.30/167,739.18 = 76,255.68/x - Step 3: Cross multiply
121,553.30x = 167,739.18 × 76,255.68 - Step 4: Simplify right side
121,553.30x = 12,791,065,233.54 - Step 5: Solve for x
x = 12,791,065,233.54/121,553.30 - Step 6: Final answer
x = 105,230.09
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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.