Finding the Fourth Proportional to 120,383.30, 166,128.63 and 69,395.75
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Solution
The fourth proportional to 120,383.30, 166,128.63 and 69,395.75 is: 95,765.95
Step by Step Solution
- Step 1: Write the proportion equation
120,383.30 : 166,128.63 = 69,395.75 : x - Step 2: Convert to fraction form
120,383.30/166,128.63 = 69,395.75/x - Step 3: Cross multiply
120,383.30x = 166,128.63 × 69,395.75 - Step 4: Simplify right side
120,383.30x = 11,528,620,875.32 - Step 5: Solve for x
x = 11,528,620,875.32/120,383.30 - Step 6: Final answer
x = 95,765.95
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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.