Finding the Fourth Proportional to 129,446,601.40, 194,169,902.10 and 78,651,695.80
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Solution
The fourth proportional to 129,446,601.40, 194,169,902.10 and 78,651,695.80 is: 117,977,543.70
Step by Step Solution
- Step 1: Write the proportion equation
129,446,601.40 : 194,169,902.10 = 78,651,695.80 : x - Step 2: Convert to fraction form
129,446,601.40/194,169,902.10 = 78,651,695.80/x - Step 3: Cross multiply
129,446,601.40x = 194,169,902.10 × 78,651,695.80 - Step 4: Simplify right side
129,446,601.40x = 15,271,792,073,484,980 - Step 5: Solve for x
x = 15,271,792,073,484,980/129,446,601.40 - Step 6: Final answer
x = 117,977,543.70
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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.