Finding the Fourth Proportional to 100,439,196.30, 138,621,218.51 and 61,303,714.99
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Solution
The fourth proportional to 100,439,196.30, 138,621,218.51 and 61,303,714.99 is: 84,608,359.92
Step by Step Solution
- Step 1: Write the proportion equation
100,439,196.30 : 138,621,218.51 = 61,303,714.99 : x - Step 2: Convert to fraction form
100,439,196.30/138,621,218.51 = 61,303,714.99/x - Step 3: Cross multiply
100,439,196.30x = 138,621,218.51 × 61,303,714.99 - Step 4: Simplify right side
100,439,196.30x = 8,497,995,670,910,258 - Step 5: Solve for x
x = 8,497,995,670,910,258/100,439,196.30 - Step 6: Final answer
x = 84,608,359.92
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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.