Finding the Fourth Proportional to 120,462.21, 166,237.31 and 66,747.09
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Solution
The fourth proportional to 120,462.21, 166,237.31 and 66,747.09 is: 92,110.69
Step by Step Solution
- Step 1: Write the proportion equation
120,462.21 : 166,237.31 = 66,747.09 : x - Step 2: Convert to fraction form
120,462.21/166,237.31 = 66,747.09/x - Step 3: Cross multiply
120,462.21x = 166,237.31 × 66,747.09 - Step 4: Simplify right side
120,462.21x = 11,095,857,482.19 - Step 5: Solve for x
x = 11,095,857,482.19/120,462.21 - Step 6: Final answer
x = 92,110.69
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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.