Finding the Fourth Proportional to 138,049.10, 207,073.65 and 124,489.70
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Solution
The fourth proportional to 138,049.10, 207,073.65 and 124,489.70 is: 186,734.55
Step by Step Solution
- Step 1: Write the proportion equation
138,049.10 : 207,073.65 = 124,489.70 : x - Step 2: Convert to fraction form
138,049.10/207,073.65 = 124,489.70/x - Step 3: Cross multiply
138,049.10x = 207,073.65 × 124,489.70 - Step 4: Simplify right side
138,049.10x = 25,778,536,566.41 - Step 5: Solve for x
x = 25,778,536,566.41/138,049.10 - Step 6: Final answer
x = 186,734.55
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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.