Finding the Fourth Proportional to 212,065.36, 318,201.80 and 99,756.91
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Solution
The fourth proportional to 212,065.36, 318,201.80 and 99,756.91 is: 149,684.17
Step by Step Solution
- Step 1: Write the proportion equation
212,065.36 : 318,201.80 = 99,756.91 : x - Step 2: Convert to fraction form
212,065.36/318,201.80 = 99,756.91/x - Step 3: Cross multiply
212,065.36x = 318,201.80 × 99,756.91 - Step 4: Simplify right side
212,065.36x = 31,742,828,324.44 - Step 5: Solve for x
x = 31,742,828,324.44/212,065.36 - Step 6: Final answer
x = 149,684.17
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.