Finding the Fourth Proportional to 129,028,276.80, 193,542,415.20 and 115,889,947.20
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Solution
The fourth proportional to 129,028,276.80, 193,542,415.20 and 115,889,947.20 is: 173,834,920.80
Step by Step Solution
- Step 1: Write the proportion equation
129,028,276.80 : 193,542,415.20 = 115,889,947.20 : x - Step 2: Convert to fraction form
129,028,276.80/193,542,415.20 = 115,889,947.20/x - Step 3: Cross multiply
129,028,276.80x = 193,542,415.20 × 115,889,947.20 - Step 4: Simplify right side
129,028,276.80x = 22,429,620,278,488,476 - Step 5: Solve for x
x = 22,429,620,278,488,476/129,028,276.80 - Step 6: Final answer
x = 173,834,920.80
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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.