Finding the Fourth Proportional to 120,668,643.80, 181,002,965.70 and 39,889,611.80
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Solution
The fourth proportional to 120,668,643.80, 181,002,965.70 and 39,889,611.80 is: 59,834,417.70
Step by Step Solution
- Step 1: Write the proportion equation
120,668,643.80 : 181,002,965.70 = 39,889,611.80 : x - Step 2: Convert to fraction form
120,668,643.80/181,002,965.70 = 39,889,611.80/x - Step 3: Cross multiply
120,668,643.80x = 181,002,965.70 × 39,889,611.80 - Step 4: Simplify right side
120,668,643.80x = 7,220,138,036,421,714 - Step 5: Solve for x
x = 7,220,138,036,421,714/120,668,643.80 - Step 6: Final answer
x = 59,834,417.70
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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.