Finding the Fourth Proportional to 189,930.62, 284,790.74 and 77,689.65
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Solution
The fourth proportional to 189,930.62, 284,790.74 and 77,689.65 is: 116,491.45
Step by Step Solution
- Step 1: Write the proportion equation
189,930.62 : 284,790.74 = 77,689.65 : x - Step 2: Convert to fraction form
189,930.62/284,790.74 = 77,689.65/x - Step 3: Cross multiply
189,930.62x = 284,790.74 × 77,689.65 - Step 4: Simplify right side
189,930.62x = 22,125,292,428.41 - Step 5: Solve for x
x = 22,125,292,428.41/189,930.62 - Step 6: Final answer
x = 116,491.45
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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.