Finding the Fourth Proportional to 149,146.68, 205,822.77 and 81,163.62
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Solution
The fourth proportional to 149,146.68, 205,822.77 and 81,163.62 is: 112,005.99
Step by Step Solution
- Step 1: Write the proportion equation
149,146.68 : 205,822.77 = 81,163.62 : x - Step 2: Convert to fraction form
149,146.68/205,822.77 = 81,163.62/x - Step 3: Cross multiply
149,146.68x = 205,822.77 × 81,163.62 - Step 4: Simplify right side
149,146.68x = 16,705,321,091.63 - Step 5: Solve for x
x = 16,705,321,091.63/149,146.68 - Step 6: Final answer
x = 112,005.99
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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.