Finding the Fourth Proportional to 135,490.74, 202,411.97 and 87,716.62
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Solution
The fourth proportional to 135,490.74, 202,411.97 and 87,716.62 is: 131,041.38
Step by Step Solution
- Step 1: Write the proportion equation
135,490.74 : 202,411.97 = 87,716.62 : x - Step 2: Convert to fraction form
135,490.74/202,411.97 = 87,716.62/x - Step 3: Cross multiply
135,490.74x = 202,411.97 × 87,716.62 - Step 4: Simplify right side
135,490.74x = 17,754,893,855.94 - Step 5: Solve for x
x = 17,754,893,855.94/135,490.74 - Step 6: Final answer
x = 131,041.38
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.