Finding the Fourth Proportional to 121,657.80, 182,486.70 and 38,551.80
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Solution
The fourth proportional to 121,657.80, 182,486.70 and 38,551.80 is: 57,827.70
Step by Step Solution
- Step 1: Write the proportion equation
121,657.80 : 182,486.70 = 38,551.80 : x - Step 2: Convert to fraction form
121,657.80/182,486.70 = 38,551.80/x - Step 3: Cross multiply
121,657.80x = 182,486.70 × 38,551.80 - Step 4: Simplify right side
121,657.80x = 7,035,190,761.06 - Step 5: Solve for x
x = 7,035,190,761.06/121,657.80 - Step 6: Final answer
x = 57,827.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.