Finding the Fourth Proportional to 125,728.74, 173,326.89 and 100,009.62
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Solution
The fourth proportional to 125,728.74, 173,326.89 and 100,009.62 is: 137,871.07
Step by Step Solution
- Step 1: Write the proportion equation
125,728.74 : 173,326.89 = 100,009.62 : x - Step 2: Convert to fraction form
125,728.74/173,326.89 = 100,009.62/x - Step 3: Cross multiply
125,728.74x = 173,326.89 × 100,009.62 - Step 4: Simplify right side
125,728.74x = 17,334,356,404.68 - Step 5: Solve for x
x = 17,334,356,404.68/125,728.74 - Step 6: Final answer
x = 137,871.07
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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.