Finding the Fourth Proportional to 135,564.39, 203,389.09 and 81,587.96
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Solution
The fourth proportional to 135,564.39, 203,389.09 and 81,587.96 is: 122,407.52
Step by Step Solution
- Step 1: Write the proportion equation
135,564.39 : 203,389.09 = 81,587.96 : x - Step 2: Convert to fraction form
135,564.39/203,389.09 = 81,587.96/x - Step 3: Cross multiply
135,564.39x = 203,389.09 × 81,587.96 - Step 4: Simplify right side
135,564.39x = 16,594,100,939.36 - Step 5: Solve for x
x = 16,594,100,939.36/135,564.39 - Step 6: Final answer
x = 122,407.52
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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.