Finding the Fourth Proportional to 121,022.62, 181,408.85 and 46,122.66
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Solution
The fourth proportional to 121,022.62, 181,408.85 and 46,122.66 is: 69,136.32
Step by Step Solution
- Step 1: Write the proportion equation
121,022.62 : 181,408.85 = 46,122.66 : x - Step 2: Convert to fraction form
121,022.62/181,408.85 = 46,122.66/x - Step 3: Cross multiply
121,022.62x = 181,408.85 × 46,122.66 - Step 4: Simplify right side
121,022.62x = 8,367,058,478.93 - Step 5: Solve for x
x = 8,367,058,478.93/121,022.62 - Step 6: Final answer
x = 69,136.32
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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.