Finding the Fourth Proportional to 129,880,418.28, 179,185,087.94 and 74,128,933.08
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Solution
The fourth proportional to 129,880,418.28, 179,185,087.94 and 74,128,933.08 is: 102,269,453.46
Step by Step Solution
- Step 1: Write the proportion equation
129,880,418.28 : 179,185,087.94 = 74,128,933.08 : x - Step 2: Convert to fraction form
129,880,418.28/179,185,087.94 = 74,128,933.08/x - Step 3: Cross multiply
129,880,418.28x = 179,185,087.94 × 74,128,933.08 - Step 4: Simplify right side
129,880,418.28x = 13,282,799,392,838,174 - Step 5: Solve for x
x = 13,282,799,392,838,174/129,880,418.28 - Step 6: Final answer
x = 102,269,453.46
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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.