Finding the Fourth Proportional to 121,867.62, 182,727.60 and 79,696.78
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Solution
The fourth proportional to 121,867.62, 182,727.60 and 79,696.78 is: 119,496.89
Step by Step Solution
- Step 1: Write the proportion equation
121,867.62 : 182,727.60 = 79,696.78 : x - Step 2: Convert to fraction form
121,867.62/182,727.60 = 79,696.78/x - Step 3: Cross multiply
121,867.62x = 182,727.60 × 79,696.78 - Step 4: Simplify right side
121,867.62x = 14,562,801,337.13 - Step 5: Solve for x
x = 14,562,801,337.13/121,867.62 - Step 6: Final answer
x = 119,496.89
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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.