Finding the Fourth Proportional to 112,331,542.80, 168,497,314.20 and 99,576,958.80
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Solution
The fourth proportional to 112,331,542.80, 168,497,314.20 and 99,576,958.80 is: 149,365,438.20
Step by Step Solution
- Step 1: Write the proportion equation
112,331,542.80 : 168,497,314.20 = 99,576,958.80 : x - Step 2: Convert to fraction form
112,331,542.80/168,497,314.20 = 99,576,958.80/x - Step 3: Cross multiply
112,331,542.80x = 168,497,314.20 × 99,576,958.80 - Step 4: Simplify right side
112,331,542.80x = 16,778,450,114,004,054 - Step 5: Solve for x
x = 16,778,450,114,004,054/112,331,542.80 - Step 6: Final answer
x = 149,365,438.20
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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.