Finding the Fourth Proportional to 120,709.91, 166,554.99 and 66,983.54
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Solution
The fourth proportional to 120,709.91, 166,554.99 and 66,983.54 is: 92,423.58
Step by Step Solution
- Step 1: Write the proportion equation
120,709.91 : 166,554.99 = 66,983.54 : x - Step 2: Convert to fraction form
120,709.91/166,554.99 = 66,983.54/x - Step 3: Cross multiply
120,709.91x = 166,554.99 × 66,983.54 - Step 4: Simplify right side
120,709.91x = 11,156,442,002.09 - Step 5: Solve for x
x = 11,156,442,002.09/120,709.91 - Step 6: Final answer
x = 92,423.58
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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.