Finding the Fourth Proportional to 258,139.04, 387,194.64 and 80,625.68
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Solution
The fourth proportional to 258,139.04, 387,194.64 and 80,625.68 is: 120,934.17
Step by Step Solution
- Step 1: Write the proportion equation
258,139.04 : 387,194.64 = 80,625.68 : x - Step 2: Convert to fraction form
258,139.04/387,194.64 = 80,625.68/x - Step 3: Cross multiply
258,139.04x = 387,194.64 × 80,625.68 - Step 4: Simplify right side
258,139.04x = 31,217,831,142.36 - Step 5: Solve for x
x = 31,217,831,142.36/258,139.04 - Step 6: Final answer
x = 120,934.17
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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.