Finding the Fourth Proportional to 149,154.66, 205,936.41 and 139,626.09
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Solution
The fourth proportional to 149,154.66, 205,936.41 and 139,626.09 is: 192,780.40
Step by Step Solution
- Step 1: Write the proportion equation
149,154.66 : 205,936.41 = 139,626.09 : x - Step 2: Convert to fraction form
149,154.66/205,936.41 = 139,626.09/x - Step 3: Cross multiply
149,154.66x = 205,936.41 × 139,626.09 - Step 4: Simplify right side
149,154.66x = 28,754,095,450.21 - Step 5: Solve for x
x = 28,754,095,450.21/149,154.66 - Step 6: Final answer
x = 192,780.40
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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.