Finding the Fourth Proportional to 135,344.21, 186,775.36 and 74,919.02
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Solution
The fourth proportional to 135,344.21, 186,775.36 and 74,919.02 is: 103,388.44
Step by Step Solution
- Step 1: Write the proportion equation
135,344.21 : 186,775.36 = 74,919.02 : x - Step 2: Convert to fraction form
135,344.21/186,775.36 = 74,919.02/x - Step 3: Cross multiply
135,344.21x = 186,775.36 × 74,919.02 - Step 4: Simplify right side
135,344.21x = 13,993,025,810.17 - Step 5: Solve for x
x = 13,993,025,810.17/135,344.21 - Step 6: Final answer
x = 103,388.44
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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.