Finding the Fourth Proportional to 135,179.84, 186,531.88 and 74,742.32
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Solution
The fourth proportional to 135,179.84, 186,531.88 and 74,742.32 is: 103,135.39
Step by Step Solution
- Step 1: Write the proportion equation
135,179.84 : 186,531.88 = 74,742.32 : x - Step 2: Convert to fraction form
135,179.84/186,531.88 = 74,742.32/x - Step 3: Cross multiply
135,179.84x = 186,531.88 × 74,742.32 - Step 4: Simplify right side
135,179.84x = 13,941,825,465.16 - Step 5: Solve for x
x = 13,941,825,465.16/135,179.84 - Step 6: Final answer
x = 103,135.39
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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.