Finding the Fourth Proportional to 121,320.60, 182,175.30 and 91,771.80
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Solution
The fourth proportional to 121,320.60, 182,175.30 and 91,771.80 is: 137,804.75
Step by Step Solution
- Step 1: Write the proportion equation
121,320.60 : 182,175.30 = 91,771.80 : x - Step 2: Convert to fraction form
121,320.60/182,175.30 = 91,771.80/x - Step 3: Cross multiply
121,320.60x = 182,175.30 × 91,771.80 - Step 4: Simplify right side
121,320.60x = 16,718,555,196.54 - Step 5: Solve for x
x = 16,718,555,196.54/121,320.60 - Step 6: Final answer
x = 137,804.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.