Finding the Fourth Proportional to 120,985.49, 166,915.37 and 73,221.41
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Solution
The fourth proportional to 120,985.49, 166,915.37 and 73,221.41 is: 101,018.55
Step by Step Solution
- Step 1: Write the proportion equation
120,985.49 : 166,915.37 = 73,221.41 : x - Step 2: Convert to fraction form
120,985.49/166,915.37 = 73,221.41/x - Step 3: Cross multiply
120,985.49x = 166,915.37 × 73,221.41 - Step 4: Simplify right side
120,985.49x = 12,221,778,375.96 - Step 5: Solve for x
x = 12,221,778,375.96/120,985.49 - Step 6: Final answer
x = 101,018.55
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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.