Finding the Fourth Proportional to 121,438.62, 167,715.96 and 92,449.02
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Solution
The fourth proportional to 121,438.62, 167,715.96 and 92,449.02 is: 127,679.12
Step by Step Solution
- Step 1: Write the proportion equation
121,438.62 : 167,715.96 = 92,449.02 : x - Step 2: Convert to fraction form
121,438.62/167,715.96 = 92,449.02/x - Step 3: Cross multiply
121,438.62x = 167,715.96 × 92,449.02 - Step 4: Simplify right side
121,438.62x = 15,505,176,140.36 - Step 5: Solve for x
x = 15,505,176,140.36/121,438.62 - Step 6: Final answer
x = 127,679.12
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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.