Finding the Fourth Proportional to 100,900,794.21, 139,243,090.68 and 54,491,043.66
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Solution
The fourth proportional to 100,900,794.21, 139,243,090.68 and 54,491,043.66 is: 75,197,637.37
Step by Step Solution
- Step 1: Write the proportion equation
100,900,794.21 : 139,243,090.68 = 54,491,043.66 : x - Step 2: Convert to fraction form
100,900,794.21/139,243,090.68 = 54,491,043.66/x - Step 3: Cross multiply
100,900,794.21x = 139,243,090.68 × 54,491,043.66 - Step 4: Simplify right side
100,900,794.21x = 7,587,501,333,597,219 - Step 5: Solve for x
x = 7,587,501,333,597,219/100,900,794.21 - Step 6: Final answer
x = 75,197,637.37
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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.