Finding the Third Proportional to 138,889.69 and 207,420.75
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Solution
The third proportional to 138,889.69 and 207,420.75 is: 309,766.47
Step by Step Solution
- Step 1: Write the proportion equation
138,889.69 : 207,420.75 = 207,420.75 : x - Step 2: Convert to fraction form
138,889.69/207,420.75 = 207,420.75/x - Step 3: Cross multiply
138,889.69x = 207,420.75 × 207,420.75 - Step 4: Simplify right side
138,889.69x = 43,023,367,530.56 - Step 5: Solve for x
x = 43,023,367,530.56/138,889.69 - Step 6: Final answer
x = 309,766.47
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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.