Finding the Fourth Proportional to 118,472.40, 163,321.80 and 73,120.08
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Solution
The fourth proportional to 118,472.40, 163,321.80 and 73,120.08 is: 100,800.72
Step by Step Solution
- Step 1: Write the proportion equation
118,472.40 : 163,321.80 = 73,120.08 : x - Step 2: Convert to fraction form
118,472.40/163,321.80 = 73,120.08/x - Step 3: Cross multiply
118,472.40x = 163,321.80 × 73,120.08 - Step 4: Simplify right side
118,472.40x = 11,942,103,081.74 - Step 5: Solve for x
x = 11,942,103,081.74/118,472.40 - Step 6: Final answer
x = 100,800.72
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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.