Finding the Fourth Proportional to 121,416.99, 167,661.19 and 76,172.75
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Solution
The fourth proportional to 121,416.99, 167,661.19 and 76,172.75 is: 105,184.73
Step by Step Solution
- Step 1: Write the proportion equation
121,416.99 : 167,661.19 = 76,172.75 : x - Step 2: Convert to fraction form
121,416.99/167,661.19 = 76,172.75/x - Step 3: Cross multiply
121,416.99x = 167,661.19 × 76,172.75 - Step 4: Simplify right side
121,416.99x = 12,771,213,910.57 - Step 5: Solve for x
x = 12,771,213,910.57/121,416.99 - Step 6: Final answer
x = 105,184.73
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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.