Finding the Fourth Proportional to 135,340.05, 186,743.34 and 74,907.84
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Solution
The fourth proportional to 135,340.05, 186,743.34 and 74,907.84 is: 103,358.47
Step by Step Solution
- Step 1: Write the proportion equation
135,340.05 : 186,743.34 = 74,907.84 : x - Step 2: Convert to fraction form
135,340.05/186,743.34 = 74,907.84/x - Step 3: Cross multiply
135,340.05x = 186,743.34 × 74,907.84 - Step 4: Simplify right side
135,340.05x = 13,988,540,233.79 - Step 5: Solve for x
x = 13,988,540,233.79/135,340.05 - Step 6: Final answer
x = 103,358.47
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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.