Finding the Fourth Proportional to 135,397.82, 186,859.52 and 74,974.09
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Solution
The fourth proportional to 135,397.82, 186,859.52 and 74,974.09 is: 103,470.07
Step by Step Solution
- Step 1: Write the proportion equation
135,397.82 : 186,859.52 = 74,974.09 : x - Step 2: Convert to fraction form
135,397.82/186,859.52 = 74,974.09/x - Step 3: Cross multiply
135,397.82x = 186,859.52 × 74,974.09 - Step 4: Simplify right side
135,397.82x = 14,009,621,627.82 - Step 5: Solve for x
x = 14,009,621,627.82/135,397.82 - Step 6: Final answer
x = 103,470.07
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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.