Finding the Fourth Proportional to 207,023.18, 310,534.70 and 66,781.80
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Solution
The fourth proportional to 207,023.18, 310,534.70 and 66,781.80 is: 100,172.68
Step by Step Solution
- Step 1: Write the proportion equation
207,023.18 : 310,534.70 = 66,781.80 : x - Step 2: Convert to fraction form
207,023.18/310,534.70 = 66,781.80/x - Step 3: Cross multiply
207,023.18x = 310,534.70 × 66,781.80 - Step 4: Simplify right side
207,023.18x = 20,738,065,894.55 - Step 5: Solve for x
x = 20,738,065,894.55/207,023.18 - Step 6: Final answer
x = 100,172.68
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1.5x scale
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.