Finding the Fourth Proportional to 121,239.36, 181,883.88 and 51,118.80
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Solution
The fourth proportional to 121,239.36, 181,883.88 and 51,118.80 is: 76,688.67
Step by Step Solution
- Step 1: Write the proportion equation
121,239.36 : 181,883.88 = 51,118.80 : x - Step 2: Convert to fraction form
121,239.36/181,883.88 = 51,118.80/x - Step 3: Cross multiply
121,239.36x = 181,883.88 × 51,118.80 - Step 4: Simplify right side
121,239.36x = 9,297,685,684.94 - Step 5: Solve for x
x = 9,297,685,684.94/121,239.36 - Step 6: Final answer
x = 76,688.67
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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.