Finding the Fourth Proportional to 120,923.19, 166,879.65 and 67,209.09
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Solution
The fourth proportional to 120,923.19, 166,879.65 and 67,209.09 is: 92,751.68
Step by Step Solution
- Step 1: Write the proportion equation
120,923.19 : 166,879.65 = 67,209.09 : x - Step 2: Convert to fraction form
120,923.19/166,879.65 = 67,209.09/x - Step 3: Cross multiply
120,923.19x = 166,879.65 × 67,209.09 - Step 4: Simplify right side
120,923.19x = 11,215,829,416.02 - Step 5: Solve for x
x = 11,215,829,416.02/120,923.19 - Step 6: Final answer
x = 92,751.68
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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.