Finding the Fourth Proportional to 129,935.40, 194,903.10 and 106,315.80
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Solution
The fourth proportional to 129,935.40, 194,903.10 and 106,315.80 is: 159,473.70
Step by Step Solution
- Step 1: Write the proportion equation
129,935.40 : 194,903.10 = 106,315.80 : x - Step 2: Convert to fraction form
129,935.40/194,903.10 = 106,315.80/x - Step 3: Cross multiply
129,935.40x = 194,903.10 × 106,315.80 - Step 4: Simplify right side
129,935.40x = 20,721,278,998.98 - Step 5: Solve for x
x = 20,721,278,998.98/129,935.40 - Step 6: Final answer
x = 159,473.70
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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.