Finding the Fourth Proportional to 129,193.16, 193,619.64 and 69,214.69
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Solution
The fourth proportional to 129,193.16, 193,619.64 and 69,214.69 is: 103,730.90
Step by Step Solution
- Step 1: Write the proportion equation
129,193.16 : 193,619.64 = 69,214.69 : x - Step 2: Convert to fraction form
129,193.16/193,619.64 = 69,214.69/x - Step 3: Cross multiply
129,193.16x = 193,619.64 × 69,214.69 - Step 4: Simplify right side
129,193.16x = 13,401,323,360.51 - Step 5: Solve for x
x = 13,401,323,360.51/129,193.16 - Step 6: Final answer
x = 103,730.90
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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.