Finding the Fourth Proportional to 149,261.13, 205,977.41 and 81,278.94
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Solution
The fourth proportional to 149,261.13, 205,977.41 and 81,278.94 is: 112,163.33
Step by Step Solution
- Step 1: Write the proportion equation
149,261.13 : 205,977.41 = 81,278.94 : x - Step 2: Convert to fraction form
149,261.13/205,977.41 = 81,278.94/x - Step 3: Cross multiply
149,261.13x = 205,977.41 × 81,278.94 - Step 4: Simplify right side
149,261.13x = 16,741,624,112.46 - Step 5: Solve for x
x = 16,741,624,112.46/149,261.13 - Step 6: Final answer
x = 112,163.33
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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.