Finding the Fourth Proportional to 121,497.62, 167,557.70 and 76,180.56
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Solution
The fourth proportional to 121,497.62, 167,557.70 and 76,180.56 is: 105,060.82
Step by Step Solution
- Step 1: Write the proportion equation
121,497.62 : 167,557.70 = 76,180.56 : x - Step 2: Convert to fraction form
121,497.62/167,557.70 = 76,180.56/x - Step 3: Cross multiply
121,497.62x = 167,557.70 × 76,180.56 - Step 4: Simplify right side
121,497.62x = 12,764,639,418.31 - Step 5: Solve for x
x = 12,764,639,418.31/121,497.62 - Step 6: Final answer
x = 105,060.82
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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.