Finding the Fourth Proportional to 117,619.18, 162,278.71 and 66,623.81
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Solution
The fourth proportional to 117,619.18, 162,278.71 and 66,623.81 is: 91,920.60
Step by Step Solution
- Step 1: Write the proportion equation
117,619.18 : 162,278.71 = 66,623.81 : x - Step 2: Convert to fraction form
117,619.18/162,278.71 = 66,623.81/x - Step 3: Cross multiply
117,619.18x = 162,278.71 × 66,623.81 - Step 4: Simplify right side
117,619.18x = 10,811,624,964.13 - Step 5: Solve for x
x = 10,811,624,964.13/117,619.18 - Step 6: Final answer
x = 91,920.60
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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.