Finding the Fourth Proportional to 138,276,021.05, 207,387,123.75 and 39,900,811.49
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Solution
The fourth proportional to 138,276,021.05, 207,387,123.75 and 39,900,811.49 is: 59,843,452.73
Step by Step Solution
- Step 1: Write the proportion equation
138,276,021.05 : 207,387,123.75 = 39,900,811.49 : x - Step 2: Convert to fraction form
138,276,021.05/207,387,123.75 = 39,900,811.49/x - Step 3: Cross multiply
138,276,021.05x = 207,387,123.75 × 39,900,811.49 - Step 4: Simplify right side
138,276,021.05x = 8,274,914,529,165,116 - Step 5: Solve for x
x = 8,274,914,529,165,116/138,276,021.05 - Step 6: Final answer
x = 59,843,452.73
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.