Finding the Fourth Proportional to 138,644,704.76, 191,335,671.26 and 76,765,048.79
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Solution
The fourth proportional to 138,644,704.76, 191,335,671.26 and 76,765,048.79 is: 105,939,077.62
Step by Step Solution
- Step 1: Write the proportion equation
138,644,704.76 : 191,335,671.26 = 76,765,048.79 : x - Step 2: Convert to fraction form
138,644,704.76/191,335,671.26 = 76,765,048.79/x - Step 3: Cross multiply
138,644,704.76x = 191,335,671.26 × 76,765,048.79 - Step 4: Simplify right side
138,644,704.76x = 14,687,892,139,157,476 - Step 5: Solve for x
x = 14,687,892,139,157,476/138,644,704.76 - Step 6: Final answer
x = 105,939,077.62
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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.