Finding the Fourth Proportional to 124,678.50, 172,112.97 and 79,418.53
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Solution
The fourth proportional to 124,678.50, 172,112.97 and 79,418.53 is: 109,633.66
Step by Step Solution
- Step 1: Write the proportion equation
124,678.50 : 172,112.97 = 79,418.53 : x - Step 2: Convert to fraction form
124,678.50/172,112.97 = 79,418.53/x - Step 3: Cross multiply
124,678.50x = 172,112.97 × 79,418.53 - Step 4: Simplify right side
124,678.50x = 13,668,959,584.29 - Step 5: Solve for x
x = 13,668,959,584.29/124,678.50 - Step 6: Final answer
x = 109,633.66
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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.