Finding the Fourth Proportional to 129,276,643.20, 193,914,964.80 and 100,366,252.80
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Solution
The fourth proportional to 129,276,643.20, 193,914,964.80 and 100,366,252.80 is: 150,549,379.20
Step by Step Solution
- Step 1: Write the proportion equation
129,276,643.20 : 193,914,964.80 = 100,366,252.80 : x - Step 2: Convert to fraction form
129,276,643.20/193,914,964.80 = 100,366,252.80/x - Step 3: Cross multiply
129,276,643.20x = 193,914,964.80 × 100,366,252.80 - Step 4: Simplify right side
129,276,643.20x = 19,462,518,378,819,904 - Step 5: Solve for x
x = 19,462,518,378,819,904/129,276,643.20 - Step 6: Final answer
x = 150,549,379.20
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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.