Finding the Fourth Proportional to 138,420.20, 207,492.06 and 68,349.80
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Solution
The fourth proportional to 138,420.20, 207,492.06 and 68,349.80 is: 102,456.44
Step by Step Solution
- Step 1: Write the proportion equation
138,420.20 : 207,492.06 = 68,349.80 : x - Step 2: Convert to fraction form
138,420.20/207,492.06 = 68,349.80/x - Step 3: Cross multiply
138,420.20x = 207,492.06 × 68,349.80 - Step 4: Simplify right side
138,420.20x = 14,182,040,802.59 - Step 5: Solve for x
x = 14,182,040,802.59/138,420.20 - Step 6: Final answer
x = 102,456.44
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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.