Finding the Fourth Proportional to 142,477,647.70, 213,716,471.55 and 97,128,015.70
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Solution
The fourth proportional to 142,477,647.70, 213,716,471.55 and 97,128,015.70 is: 145,692,023.55
Step by Step Solution
- Step 1: Write the proportion equation
142,477,647.70 : 213,716,471.55 = 97,128,015.70 : x - Step 2: Convert to fraction form
142,477,647.70/213,716,471.55 = 97,128,015.70/x - Step 3: Cross multiply
142,477,647.70x = 213,716,471.55 × 97,128,015.70 - Step 4: Simplify right side
142,477,647.70x = 20,757,856,804,057,004 - Step 5: Solve for x
x = 20,757,856,804,057,004/142,477,647.70 - Step 6: Final answer
x = 145,692,023.55
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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.