Finding the Fourth Proportional to 135,451.60, 186,929.91 and 81,735.71
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Solution
The fourth proportional to 135,451.60, 186,929.91 and 81,735.71 is: 112,799.32
Step by Step Solution
- Step 1: Write the proportion equation
135,451.60 : 186,929.91 = 81,735.71 : x - Step 2: Convert to fraction form
135,451.60/186,929.91 = 81,735.71/x - Step 3: Cross multiply
135,451.60x = 186,929.91 × 81,735.71 - Step 4: Simplify right side
135,451.60x = 15,278,847,979.44 - Step 5: Solve for x
x = 15,278,847,979.44/135,451.60 - Step 6: Final answer
x = 112,799.32
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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.