Finding the Fourth Proportional to 135,239.20, 186,628.46 and 74,805.08
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Solution
The fourth proportional to 135,239.20, 186,628.46 and 74,805.08 is: 103,230.11
Step by Step Solution
- Step 1: Write the proportion equation
135,239.20 : 186,628.46 = 74,805.08 : x - Step 2: Convert to fraction form
135,239.20/186,628.46 = 74,805.08/x - Step 3: Cross multiply
135,239.20x = 186,628.46 × 74,805.08 - Step 4: Simplify right side
135,239.20x = 13,960,756,880.58 - Step 5: Solve for x
x = 13,960,756,880.58/135,239.20 - Step 6: Final answer
x = 103,230.11
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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.