Finding the Fourth Proportional to 106,509,302.20, 159,763,953.30 and 87,361,679.80
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Solution
The fourth proportional to 106,509,302.20, 159,763,953.30 and 87,361,679.80 is: 131,042,519.70
Step by Step Solution
- Step 1: Write the proportion equation
106,509,302.20 : 159,763,953.30 = 87,361,679.80 : x - Step 2: Convert to fraction form
106,509,302.20/159,763,953.30 = 87,361,679.80/x - Step 3: Cross multiply
106,509,302.20x = 159,763,953.30 × 87,361,679.80 - Step 4: Simplify right side
106,509,302.20x = 13,957,247,331,776,754 - Step 5: Solve for x
x = 13,957,247,331,776,754/106,509,302.20 - Step 6: Final answer
x = 131,042,519.70
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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.