Finding the Fourth Proportional to 187,063.86, 258,071.67 and 138,122.79
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Solution
The fourth proportional to 187,063.86, 258,071.67 and 138,122.79 is: 190,552.99
Step by Step Solution
- Step 1: Write the proportion equation
187,063.86 : 258,071.67 = 138,122.79 : x - Step 2: Convert to fraction form
187,063.86/258,071.67 = 138,122.79/x - Step 3: Cross multiply
187,063.86x = 258,071.67 × 138,122.79 - Step 4: Simplify right side
187,063.86x = 35,645,578,112.59 - Step 5: Solve for x
x = 35,645,578,112.59/187,063.86 - Step 6: Final answer
x = 190,552.99
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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.