Finding the Fourth Proportional to 189,792.50, 261,734.63 and 121,830.26
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Solution
The fourth proportional to 189,792.50, 261,734.63 and 121,830.26 is: 168,010.84
Step by Step Solution
- Step 1: Write the proportion equation
189,792.50 : 261,734.63 = 121,830.26 : x - Step 2: Convert to fraction form
189,792.50/261,734.63 = 121,830.26/x - Step 3: Cross multiply
189,792.50x = 261,734.63 × 121,830.26 - Step 4: Simplify right side
189,792.50x = 31,887,196,106.08 - Step 5: Solve for x
x = 31,887,196,106.08/189,792.50 - Step 6: Final answer
x = 168,010.84
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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.