Finding the Fourth Proportional to 112,331,431.80, 168,497,147.70 and 99,576,847.80
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Solution
The fourth proportional to 112,331,431.80, 168,497,147.70 and 99,576,847.80 is: 149,365,271.70
Step by Step Solution
- Step 1: Write the proportion equation
112,331,431.80 : 168,497,147.70 = 99,576,847.80 : x - Step 2: Convert to fraction form
112,331,431.80/168,497,147.70 = 99,576,847.80/x - Step 3: Cross multiply
112,331,431.80x = 168,497,147.70 × 99,576,847.80 - Step 4: Simplify right side
112,331,431.80x = 16,778,414,831,257,018 - Step 5: Solve for x
x = 16,778,414,831,257,018/112,331,431.80 - Step 6: Final answer
x = 149,365,271.70
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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.