Finding the Fourth Proportional to 135,504.01, 203,217.63 and 85,509.19
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Solution
The fourth proportional to 135,504.01, 203,217.63 and 85,509.19 is: 128,239.56
Step by Step Solution
- Step 1: Write the proportion equation
135,504.01 : 203,217.63 = 85,509.19 : x - Step 2: Convert to fraction form
135,504.01/203,217.63 = 85,509.19/x - Step 3: Cross multiply
135,504.01x = 203,217.63 × 85,509.19 - Step 4: Simplify right side
135,504.01x = 17,376,974,935.02 - Step 5: Solve for x
x = 17,376,974,935.02/135,504.01 - Step 6: Final answer
x = 128,239.56
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1.5x scale
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.