Finding the Fourth Proportional to 138,233.13, 207,342.41 and 68,088.75
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Solution
The fourth proportional to 138,233.13, 207,342.41 and 68,088.75 is: 102,129.53
Step by Step Solution
- Step 1: Write the proportion equation
138,233.13 : 207,342.41 = 68,088.75 : x - Step 2: Convert to fraction form
138,233.13/207,342.41 = 68,088.75/x - Step 3: Cross multiply
138,233.13x = 207,342.41 × 68,088.75 - Step 4: Simplify right side
138,233.13x = 14,117,685,178.44 - Step 5: Solve for x
x = 14,117,685,178.44/138,233.13 - Step 6: Final answer
x = 102,129.53
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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.