Finding the Fourth Proportional to 129,030,574.80, 193,545,862.20 and 115,892,245.20
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Solution
The fourth proportional to 129,030,574.80, 193,545,862.20 and 115,892,245.20 is: 173,838,367.80
Step by Step Solution
- Step 1: Write the proportion equation
129,030,574.80 : 193,545,862.20 = 115,892,245.20 : x - Step 2: Convert to fraction form
129,030,574.80/193,545,862.20 = 115,892,245.20/x - Step 3: Cross multiply
129,030,574.80x = 193,545,862.20 × 115,892,245.20 - Step 4: Simplify right side
129,030,574.80x = 22,430,464,519,527,812 - Step 5: Solve for x
x = 22,430,464,519,527,812/129,030,574.80 - Step 6: Final answer
x = 173,838,367.80
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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.