Finding the Fourth Proportional to 129,860.19, 194,790.39 and 103,731.00
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Solution
The fourth proportional to 129,860.19, 194,790.39 and 103,731.00 is: 155,596.60
Step by Step Solution
- Step 1: Write the proportion equation
129,860.19 : 194,790.39 = 103,731.00 : x - Step 2: Convert to fraction form
129,860.19/194,790.39 = 103,731.00/x - Step 3: Cross multiply
129,860.19x = 194,790.39 × 103,731.00 - Step 4: Simplify right side
129,860.19x = 20,205,803,344.41 - Step 5: Solve for x
x = 20,205,803,344.41/129,860.19 - Step 6: Final answer
x = 155,596.60
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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.