Finding the Fourth Proportional to 189,930.08, 261,847.03 and 121,828.84
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Solution
The fourth proportional to 189,930.08, 261,847.03 and 121,828.84 is: 167,959.27
Step by Step Solution
- Step 1: Write the proportion equation
189,930.08 : 261,847.03 = 121,828.84 : x - Step 2: Convert to fraction form
189,930.08/261,847.03 = 121,828.84/x - Step 3: Cross multiply
189,930.08x = 261,847.03 × 121,828.84 - Step 4: Simplify right side
189,930.08x = 31,900,518,003.97 - Step 5: Solve for x
x = 31,900,518,003.97/189,930.08 - Step 6: Final answer
x = 167,959.27
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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.