Finding the Fourth Proportional to 120,354.63, 166,091.99 and 65,909.09
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Solution
The fourth proportional to 120,354.63, 166,091.99 and 65,909.09 is: 90,955.97
Step by Step Solution
- Step 1: Write the proportion equation
120,354.63 : 166,091.99 = 65,909.09 : x - Step 2: Convert to fraction form
120,354.63/166,091.99 = 65,909.09/x - Step 3: Cross multiply
120,354.63x = 166,091.99 × 65,909.09 - Step 4: Simplify right side
120,354.63x = 10,946,972,002.87 - Step 5: Solve for x
x = 10,946,972,002.87/120,354.63 - Step 6: Final answer
x = 90,955.97
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1.5x scale
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.