Finding the Fourth Proportional to 135,220.80, 202,997.60 and 85,300.80
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Solution
The fourth proportional to 135,220.80, 202,997.60 and 85,300.80 is: 128,056.17
Step by Step Solution
- Step 1: Write the proportion equation
135,220.80 : 202,997.60 = 85,300.80 : x - Step 2: Convert to fraction form
135,220.80/202,997.60 = 85,300.80/x - Step 3: Cross multiply
135,220.80x = 202,997.60 × 85,300.80 - Step 4: Simplify right side
135,220.80x = 17,315,857,678.08 - Step 5: Solve for x
x = 17,315,857,678.08/135,220.80 - Step 6: Final answer
x = 128,056.17
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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.