Finding the Fourth Proportional to 135,307.26, 186,720.21 and 74,880.42
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Solution
The fourth proportional to 135,307.26, 186,720.21 and 74,880.42 is: 103,332.87
Step by Step Solution
- Step 1: Write the proportion equation
135,307.26 : 186,720.21 = 74,880.42 : x - Step 2: Convert to fraction form
135,307.26/186,720.21 = 74,880.42/x - Step 3: Cross multiply
135,307.26x = 186,720.21 × 74,880.42 - Step 4: Simplify right side
135,307.26x = 13,981,687,747.29 - Step 5: Solve for x
x = 13,981,687,747.29/135,307.26 - Step 6: Final answer
x = 103,332.87
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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.