Finding the Fourth Proportional to 160,930.96, 221,939.40 and 100,507.12
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Solution
The fourth proportional to 160,930.96, 221,939.40 and 100,507.12 is: 138,609.07
Step by Step Solution
- Step 1: Write the proportion equation
160,930.96 : 221,939.40 = 100,507.12 : x - Step 2: Convert to fraction form
160,930.96/221,939.40 = 100,507.12/x - Step 3: Cross multiply
160,930.96x = 221,939.40 × 100,507.12 - Step 4: Simplify right side
160,930.96x = 22,306,489,908.53 - Step 5: Solve for x
x = 22,306,489,908.53/160,930.96 - Step 6: Final answer
x = 138,609.07
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.