Finding the Fourth Proportional to 142,477,928.70, 213,716,893.05 and 97,128,296.70
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Solution
The fourth proportional to 142,477,928.70, 213,716,893.05 and 97,128,296.70 is: 145,692,445.05
Step by Step Solution
- Step 1: Write the proportion equation
142,477,928.70 : 213,716,893.05 = 97,128,296.70 : x - Step 2: Convert to fraction form
142,477,928.70/213,716,893.05 = 97,128,296.70/x - Step 3: Cross multiply
142,477,928.70x = 213,716,893.05 × 97,128,296.70 - Step 4: Simplify right side
142,477,928.70x = 20,757,957,797,962,568 - Step 5: Solve for x
x = 20,757,957,797,962,568/142,477,928.70 - Step 6: Final answer
x = 145,692,445.05
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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.