Finding the Fourth Proportional to 135,423.28, 186,883.08 and 74,993.68
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Solution
The fourth proportional to 135,423.28, 186,883.08 and 74,993.68 is: 103,490.70
Step by Step Solution
- Step 1: Write the proportion equation
135,423.28 : 186,883.08 = 74,993.68 : x - Step 2: Convert to fraction form
135,423.28/186,883.08 = 74,993.68/x - Step 3: Cross multiply
135,423.28x = 186,883.08 × 74,993.68 - Step 4: Simplify right side
135,423.28x = 14,015,049,898.93 - Step 5: Solve for x
x = 14,015,049,898.93/135,423.28 - Step 6: Final answer
x = 103,490.70
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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.