Finding the Fourth Proportional to 142,477,879.20, 213,716,818.80 and 97,128,247.20
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Solution
The fourth proportional to 142,477,879.20, 213,716,818.80 and 97,128,247.20 is: 145,692,370.80
Step by Step Solution
- Step 1: Write the proportion equation
142,477,879.20 : 213,716,818.80 = 97,128,247.20 : x - Step 2: Convert to fraction form
142,477,879.20/213,716,818.80 = 97,128,247.20/x - Step 3: Cross multiply
142,477,879.20x = 213,716,818.80 × 97,128,247.20 - Step 4: Simplify right side
142,477,879.20x = 20,757,940,007,204,008 - Step 5: Solve for x
x = 20,757,940,007,204,008/142,477,879.20 - Step 6: Final answer
x = 145,692,370.80
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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.