Finding the Fourth Proportional to 100,439,197.30, 138,621,219.89 and 61,303,715.99
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Solution
The fourth proportional to 100,439,197.30, 138,621,219.89 and 61,303,715.99 is: 84,608,361.30
Step by Step Solution
- Step 1: Write the proportion equation
100,439,197.30 : 138,621,219.89 = 61,303,715.99 : x - Step 2: Convert to fraction form
100,439,197.30/138,621,219.89 = 61,303,715.99/x - Step 3: Cross multiply
100,439,197.30x = 138,621,219.89 × 61,303,715.99 - Step 4: Simplify right side
100,439,197.30x = 8,497,995,894,323,898 - Step 5: Solve for x
x = 8,497,995,894,323,898/100,439,197.30 - Step 6: Final answer
x = 84,608,361.30
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.