Finding the Fourth Proportional to 121,029.20, 181,716.60 and 68,541.20
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Solution
The fourth proportional to 121,029.20, 181,716.60 and 68,541.20 is: 102,909.66
Step by Step Solution
- Step 1: Write the proportion equation
121,029.20 : 181,716.60 = 68,541.20 : x - Step 2: Convert to fraction form
121,029.20/181,716.60 = 68,541.20/x - Step 3: Cross multiply
121,029.20x = 181,716.60 × 68,541.20 - Step 4: Simplify right side
121,029.20x = 12,455,073,823.92 - Step 5: Solve for x
x = 12,455,073,823.92/121,029.20 - Step 6: Final answer
x = 102,909.66
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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.