Finding the Fourth Proportional to 125,842.18, 173,669.70 and 72,130.68
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Solution
The fourth proportional to 125,842.18, 173,669.70 and 72,130.68 is: 99,544.63
Step by Step Solution
- Step 1: Write the proportion equation
125,842.18 : 173,669.70 = 72,130.68 : x - Step 2: Convert to fraction form
125,842.18/173,669.70 = 72,130.68/x - Step 3: Cross multiply
125,842.18x = 173,669.70 × 72,130.68 - Step 4: Simplify right side
125,842.18x = 12,526,913,556.40 - Step 5: Solve for x
x = 12,526,913,556.40/125,842.18 - Step 6: Final answer
x = 99,544.63
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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.