Finding the Fourth Proportional to 125,142.68, 172,654.62 and 71,389.88
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Solution
The fourth proportional to 125,142.68, 172,654.62 and 71,389.88 is: 98,493.92
Step by Step Solution
- Step 1: Write the proportion equation
125,142.68 : 172,654.62 = 71,389.88 : x - Step 2: Convert to fraction form
125,142.68/172,654.62 = 71,389.88/x - Step 3: Cross multiply
125,142.68x = 172,654.62 × 71,389.88 - Step 4: Simplify right side
125,142.68x = 12,325,792,603.25 - Step 5: Solve for x
x = 12,325,792,603.25/125,142.68 - Step 6: Final answer
x = 98,493.92
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.