Finding the Fourth Proportional to 120,420.19, 166,177.78 and 66,704.08
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Solution
The fourth proportional to 120,420.19, 166,177.78 and 66,704.08 is: 92,050.47
Step by Step Solution
- Step 1: Write the proportion equation
120,420.19 : 166,177.78 = 66,704.08 : x - Step 2: Convert to fraction form
120,420.19/166,177.78 = 66,704.08/x - Step 3: Cross multiply
120,420.19x = 166,177.78 × 66,704.08 - Step 4: Simplify right side
120,420.19x = 11,084,735,349.14 - Step 5: Solve for x
x = 11,084,735,349.14/120,420.19 - Step 6: Final answer
x = 92,050.47
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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.