Finding the Fourth Proportional to 121,424.81, 167,560.11 and 66,986.46
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Solution
The fourth proportional to 121,424.81, 167,560.11 and 66,986.46 is: 92,437.94
Step by Step Solution
- Step 1: Write the proportion equation
121,424.81 : 167,560.11 = 66,986.46 : x - Step 2: Convert to fraction form
121,424.81/167,560.11 = 66,986.46/x - Step 3: Cross multiply
121,424.81x = 167,560.11 × 66,986.46 - Step 4: Simplify right side
121,424.81x = 11,224,258,606.11 - Step 5: Solve for x
x = 11,224,258,606.11/121,424.81 - Step 6: Final answer
x = 92,437.94
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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.