Finding the Fourth Proportional to 124,629.44, 172,008.36 and 79,260.12
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Solution
The fourth proportional to 124,629.44, 172,008.36 and 79,260.12 is: 109,391.52
Step by Step Solution
- Step 1: Write the proportion equation
124,629.44 : 172,008.36 = 79,260.12 : x - Step 2: Convert to fraction form
124,629.44/172,008.36 = 79,260.12/x - Step 3: Cross multiply
124,629.44x = 172,008.36 × 79,260.12 - Step 4: Simplify right side
124,629.44x = 13,633,403,254.60 - Step 5: Solve for x
x = 13,633,403,254.60/124,629.44 - Step 6: Final answer
x = 109,391.52
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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.