Finding the Fourth Proportional to 135,126.28, 186,478.50 and 74,698.84
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Solution
The fourth proportional to 135,126.28, 186,478.50 and 74,698.84 is: 103,086.74
Step by Step Solution
- Step 1: Write the proportion equation
135,126.28 : 186,478.50 = 74,698.84 : x - Step 2: Convert to fraction form
135,126.28/186,478.50 = 74,698.84/x - Step 3: Cross multiply
135,126.28x = 186,478.50 × 74,698.84 - Step 4: Simplify right side
135,126.28x = 13,929,727,634.94 - Step 5: Solve for x
x = 13,929,727,634.94/135,126.28 - Step 6: Final answer
x = 103,086.74
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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.