Finding the Fourth Proportional to 121,175.70, 181,331.55 and 76,823.70
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Solution
The fourth proportional to 121,175.70, 181,331.55 and 76,823.70 is: 114,961.67
Step by Step Solution
- Step 1: Write the proportion equation
121,175.70 : 181,331.55 = 76,823.70 : x - Step 2: Convert to fraction form
121,175.70/181,331.55 = 76,823.70/x - Step 3: Cross multiply
121,175.70x = 181,331.55 × 76,823.70 - Step 4: Simplify right side
121,175.70x = 13,930,560,597.74 - Step 5: Solve for x
x = 13,930,560,597.74/121,175.70 - Step 6: Final answer
x = 114,961.67
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1.5x scale
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.