Finding the Fourth Proportional to 138,415.10, 207,622.65 and 124,855.70
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Solution
The fourth proportional to 138,415.10, 207,622.65 and 124,855.70 is: 187,283.55
Step by Step Solution
- Step 1: Write the proportion equation
138,415.10 : 207,622.65 = 124,855.70 : x - Step 2: Convert to fraction form
138,415.10/207,622.65 = 124,855.70/x - Step 3: Cross multiply
138,415.10x = 207,622.65 × 124,855.70 - Step 4: Simplify right side
138,415.10x = 25,922,871,301.61 - Step 5: Solve for x
x = 25,922,871,301.61/138,415.10 - Step 6: Final answer
x = 187,283.55
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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.