Finding the Fourth Proportional to 138,246.64, 207,362.64 and 68,102.26
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Solution
The fourth proportional to 138,246.64, 207,362.64 and 68,102.26 is: 102,149.78
Step by Step Solution
- Step 1: Write the proportion equation
138,246.64 : 207,362.64 = 68,102.26 : x - Step 2: Convert to fraction form
138,246.64/207,362.64 = 68,102.26/x - Step 3: Cross multiply
138,246.64x = 207,362.64 × 68,102.26 - Step 4: Simplify right side
138,246.64x = 14,121,864,423.57 - Step 5: Solve for x
x = 14,121,864,423.57/138,246.64 - Step 6: Final answer
x = 102,149.78
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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.