Finding the Fourth Proportional to 138,531,117.24, 191,173,165.74 and 76,654,063.80
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Solution
The fourth proportional to 138,531,117.24, 191,173,165.74 and 76,654,063.80 is: 105,782,731.96
Step by Step Solution
- Step 1: Write the proportion equation
138,531,117.24 : 191,173,165.74 = 76,654,063.80 : x - Step 2: Convert to fraction form
138,531,117.24/191,173,165.74 = 76,654,063.80/x - Step 3: Cross multiply
138,531,117.24x = 191,173,165.74 × 76,654,063.80 - Step 4: Simplify right side
138,531,117.24x = 14,654,200,043,481,934 - Step 5: Solve for x
x = 14,654,200,043,481,934/138,531,117.24 - Step 6: Final answer
x = 105,782,731.96
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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.