Finding the Fourth Proportional to 139,959,343.99, 193,143,977.85 and 78,079,682.62
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Solution
The fourth proportional to 139,959,343.99, 193,143,977.85 and 78,079,682.62 is: 107,750,008.40
Step by Step Solution
- Step 1: Write the proportion equation
139,959,343.99 : 193,143,977.85 = 78,079,682.62 : x - Step 2: Convert to fraction form
139,959,343.99/193,143,977.85 = 78,079,682.62/x - Step 3: Cross multiply
139,959,343.99x = 193,143,977.85 × 78,079,682.62 - Step 4: Simplify right side
139,959,343.99x = 15,080,620,490,492,310 - Step 5: Solve for x
x = 15,080,620,490,492,310/139,959,343.99 - Step 6: Final answer
x = 107,750,008.40
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.