Finding the Fourth Proportional to 120,765.24, 166,655.28 and 66,318.12
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Solution
The fourth proportional to 120,765.24, 166,655.28 and 66,318.12 is: 91,518.59
Step by Step Solution
- Step 1: Write the proportion equation
120,765.24 : 166,655.28 = 66,318.12 : x - Step 2: Convert to fraction form
120,765.24/166,655.28 = 66,318.12/x - Step 3: Cross multiply
120,765.24x = 166,655.28 × 66,318.12 - Step 4: Simplify right side
120,765.24x = 11,052,264,857.67 - Step 5: Solve for x
x = 11,052,264,857.67/120,765.24 - Step 6: Final answer
x = 91,518.59
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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.