Finding the Fourth Proportional to 172,122.30, 257,630.94 and 91,959.96
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Solution
The fourth proportional to 172,122.30, 257,630.94 and 91,959.96 is: 137,644.75
Step by Step Solution
- Step 1: Write the proportion equation
172,122.30 : 257,630.94 = 91,959.96 : x - Step 2: Convert to fraction form
172,122.30/257,630.94 = 91,959.96/x - Step 3: Cross multiply
172,122.30x = 257,630.94 × 91,959.96 - Step 4: Simplify right side
172,122.30x = 23,691,730,937.16 - Step 5: Solve for x
x = 23,691,730,937.16/172,122.30 - Step 6: Final answer
x = 137,644.75
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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.