Finding the Fourth Proportional to 189,449.73, 261,327.20 and 138,400.09
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Solution
The fourth proportional to 189,449.73, 261,327.20 and 138,400.09 is: 190,909.25
Step by Step Solution
- Step 1: Write the proportion equation
189,449.73 : 261,327.20 = 138,400.09 : x - Step 2: Convert to fraction form
189,449.73/261,327.20 = 138,400.09/x - Step 3: Cross multiply
189,449.73x = 261,327.20 × 138,400.09 - Step 4: Simplify right side
189,449.73x = 36,167,706,654.13 - Step 5: Solve for x
x = 36,167,706,654.13/189,449.73 - Step 6: Final answer
x = 190,909.25
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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.