Finding the Fourth Proportional to 135,106.52, 202,640.34 and 78,972.44
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Solution
The fourth proportional to 135,106.52, 202,640.34 and 78,972.44 is: 118,447.30
Step by Step Solution
- Step 1: Write the proportion equation
135,106.52 : 202,640.34 = 78,972.44 : x - Step 2: Convert to fraction form
135,106.52/202,640.34 = 78,972.44/x - Step 3: Cross multiply
135,106.52x = 202,640.34 × 78,972.44 - Step 4: Simplify right side
135,106.52x = 16,003,002,092.23 - Step 5: Solve for x
x = 16,003,002,092.23/135,106.52 - Step 6: Final answer
x = 118,447.30
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.