Finding the Fourth Proportional to 139,987.23, 193,179.09 and 76,324.87
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Solution
The fourth proportional to 139,987.23, 193,179.09 and 76,324.87 is: 105,326.53
Step by Step Solution
- Step 1: Write the proportion equation
139,987.23 : 193,179.09 = 76,324.87 : x - Step 2: Convert to fraction form
139,987.23/193,179.09 = 76,324.87/x - Step 3: Cross multiply
139,987.23x = 193,179.09 × 76,324.87 - Step 4: Simplify right side
139,987.23x = 14,744,368,930.97 - Step 5: Solve for x
x = 14,744,368,930.97/139,987.23 - Step 6: Final answer
x = 105,326.53
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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.