Finding the Fourth Proportional to 125,416.13, 173,062.79 and 74,420.07
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Solution
The fourth proportional to 125,416.13, 173,062.79 and 74,420.07 is: 102,692.89
Step by Step Solution
- Step 1: Write the proportion equation
125,416.13 : 173,062.79 = 74,420.07 : x - Step 2: Convert to fraction form
125,416.13/173,062.79 = 74,420.07/x - Step 3: Cross multiply
125,416.13x = 173,062.79 × 74,420.07 - Step 4: Simplify right side
125,416.13x = 12,879,344,574.10 - Step 5: Solve for x
x = 12,879,344,574.10/125,416.13 - Step 6: Final answer
x = 102,692.89
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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.