Finding the Fourth Proportional to 125,439.79, 173,187.98 and 77,743.75
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Solution
The fourth proportional to 125,439.79, 173,187.98 and 77,743.75 is: 107,336.62
Step by Step Solution
- Step 1: Write the proportion equation
125,439.79 : 173,187.98 = 77,743.75 : x - Step 2: Convert to fraction form
125,439.79/173,187.98 = 77,743.75/x - Step 3: Cross multiply
125,439.79x = 173,187.98 × 77,743.75 - Step 4: Simplify right side
125,439.79x = 13,464,283,020.13 - Step 5: Solve for x
x = 13,464,283,020.13/125,439.79 - Step 6: Final answer
x = 107,336.62
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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.