Finding the Fourth Proportional to 135,058.97, 186,378.82 and 74,628.34
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Solution
The fourth proportional to 135,058.97, 186,378.82 and 74,628.34 is: 102,985.69
Step by Step Solution
- Step 1: Write the proportion equation
135,058.97 : 186,378.82 = 74,628.34 : x - Step 2: Convert to fraction form
135,058.97/186,378.82 = 74,628.34/x - Step 3: Cross multiply
135,058.97x = 186,378.82 × 74,628.34 - Step 4: Simplify right side
135,058.97x = 13,909,141,295.24 - Step 5: Solve for x
x = 13,909,141,295.24/135,058.97 - Step 6: Final answer
x = 102,985.69
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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.