Finding the Fourth Proportional to 109,512,163.60, 164,268,245.40 and 66,430,013.20
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Solution
The fourth proportional to 109,512,163.60, 164,268,245.40 and 66,430,013.20 is: 99,645,019.80
Step by Step Solution
- Step 1: Write the proportion equation
109,512,163.60 : 164,268,245.40 = 66,430,013.20 : x - Step 2: Convert to fraction form
109,512,163.60/164,268,245.40 = 66,430,013.20/x - Step 3: Cross multiply
109,512,163.60x = 164,268,245.40 × 66,430,013.20 - Step 4: Simplify right side
109,512,163.60x = 10,912,341,710,262,840 - Step 5: Solve for x
x = 10,912,341,710,262,840/109,512,163.60 - Step 6: Final answer
x = 99,645,019.80
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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.