Finding the Fourth Proportional to 117,661.84, 162,376.92 and 72,366.44
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Solution
The fourth proportional to 117,661.84, 162,376.92 and 72,366.44 is: 99,867.88
Step by Step Solution
- Step 1: Write the proportion equation
117,661.84 : 162,376.92 = 72,366.44 : x - Step 2: Convert to fraction form
117,661.84/162,376.92 = 72,366.44/x - Step 3: Cross multiply
117,661.84x = 162,376.92 × 72,366.44 - Step 4: Simplify right side
117,661.84x = 11,750,638,826.68 - Step 5: Solve for x
x = 11,750,638,826.68/117,661.84 - Step 6: Final answer
x = 99,867.88
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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.