Finding the Fourth Proportional to 120,764.99, 166,655.05 and 66,318.20
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Solution
The fourth proportional to 120,764.99, 166,655.05 and 66,318.20 is: 91,518.77
Step by Step Solution
- Step 1: Write the proportion equation
120,764.99 : 166,655.05 = 66,318.20 : x - Step 2: Convert to fraction form
120,764.99/166,655.05 = 66,318.20/x - Step 3: Cross multiply
120,764.99x = 166,655.05 × 66,318.20 - Step 4: Simplify right side
120,764.99x = 11,052,262,936.91 - Step 5: Solve for x
x = 11,052,262,936.91/120,764.99 - Step 6: Final answer
x = 91,518.77
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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.