Finding the Fourth Proportional to 124,721.07, 172,118.85 and 68,136.09
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Solution
The fourth proportional to 124,721.07, 172,118.85 and 68,136.09 is: 94,029.87
Step by Step Solution
- Step 1: Write the proportion equation
124,721.07 : 172,118.85 = 68,136.09 : x - Step 2: Convert to fraction form
124,721.07/172,118.85 = 68,136.09/x - Step 3: Cross multiply
124,721.07x = 172,118.85 × 68,136.09 - Step 4: Simplify right side
124,721.07x = 11,727,505,454.30 - Step 5: Solve for x
x = 11,727,505,454.30/124,721.07 - Step 6: Final answer
x = 94,029.87
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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.