Finding the Fourth Proportional to 135,306.76, 202,719.40 and 115,383.20
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Solution
The fourth proportional to 135,306.76, 202,719.40 and 115,383.20 is: 172,869.51
Step by Step Solution
- Step 1: Write the proportion equation
135,306.76 : 202,719.40 = 115,383.20 : x - Step 2: Convert to fraction form
135,306.76/202,719.40 = 115,383.20/x - Step 3: Cross multiply
135,306.76x = 202,719.40 × 115,383.20 - Step 4: Simplify right side
135,306.76x = 23,390,413,074.08 - Step 5: Solve for x
x = 23,390,413,074.08/135,306.76 - Step 6: Final answer
x = 172,869.51
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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.