Finding the Fourth Proportional to 121,402.80, 182,104.20 and 68,914.80
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Solution
The fourth proportional to 121,402.80, 182,104.20 and 68,914.80 is: 103,372.20
Step by Step Solution
- Step 1: Write the proportion equation
121,402.80 : 182,104.20 = 68,914.80 : x - Step 2: Convert to fraction form
121,402.80/182,104.20 = 68,914.80/x - Step 3: Cross multiply
121,402.80x = 182,104.20 × 68,914.80 - Step 4: Simplify right side
121,402.80x = 12,549,674,522.16 - Step 5: Solve for x
x = 12,549,674,522.16/121,402.80 - Step 6: Final answer
x = 103,372.20
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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.