Finding the Fourth Proportional to 120,428.04, 166,187.34 and 69,439.80
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Solution
The fourth proportional to 120,428.04, 166,187.34 and 69,439.80 is: 95,824.99
Step by Step Solution
- Step 1: Write the proportion equation
120,428.04 : 166,187.34 = 69,439.80 : x - Step 2: Convert to fraction form
120,428.04/166,187.34 = 69,439.80/x - Step 3: Cross multiply
120,428.04x = 166,187.34 × 69,439.80 - Step 4: Simplify right side
120,428.04x = 11,540,015,652.13 - Step 5: Solve for x
x = 11,540,015,652.13/120,428.04 - Step 6: Final answer
x = 95,824.99
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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.