Finding the Fourth Proportional to 161,721.70, 242,582.55 and 91,737.70
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Solution
The fourth proportional to 161,721.70, 242,582.55 and 91,737.70 is: 137,606.55
Step by Step Solution
- Step 1: Write the proportion equation
161,721.70 : 242,582.55 = 91,737.70 : x - Step 2: Convert to fraction form
161,721.70/242,582.55 = 91,737.70/x - Step 3: Cross multiply
161,721.70x = 242,582.55 × 91,737.70 - Step 4: Simplify right side
161,721.70x = 22,253,965,197.14 - Step 5: Solve for x
x = 22,253,965,197.14/161,721.70 - Step 6: Final answer
x = 137,606.55
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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.