Finding the Fourth Proportional to 135,217.20, 186,598.62 and 74,787.66
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Solution
The fourth proportional to 135,217.20, 186,598.62 and 74,787.66 is: 103,206.35
Step by Step Solution
- Step 1: Write the proportion equation
135,217.20 : 186,598.62 = 74,787.66 : x - Step 2: Convert to fraction form
135,217.20/186,598.62 = 74,787.66/x - Step 3: Cross multiply
135,217.20x = 186,598.62 × 74,787.66 - Step 4: Simplify right side
135,217.20x = 13,955,274,149.03 - Step 5: Solve for x
x = 13,955,274,149.03/135,217.20 - Step 6: Final answer
x = 103,206.35
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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.