Finding the Fourth Proportional to 121,013.09, 181,512.69 and 46,140.80
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Solution
The fourth proportional to 121,013.09, 181,512.69 and 46,140.80 is: 69,208.55
Step by Step Solution
- Step 1: Write the proportion equation
121,013.09 : 181,512.69 = 46,140.80 : x - Step 2: Convert to fraction form
121,013.09/181,512.69 = 46,140.80/x - Step 3: Cross multiply
121,013.09x = 181,512.69 × 46,140.80 - Step 4: Simplify right side
121,013.09x = 8,375,139,819.19 - Step 5: Solve for x
x = 8,375,139,819.19/121,013.09 - Step 6: Final answer
x = 69,208.55
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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.