Finding the Fourth Proportional to 128,359,745.28, 192,520,711.68 and 42,107,266.56
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Solution
The fourth proportional to 128,359,745.28, 192,520,711.68 and 42,107,266.56 is: 63,154,697.82
Step by Step Solution
- Step 1: Write the proportion equation
128,359,745.28 : 192,520,711.68 = 42,107,266.56 : x - Step 2: Convert to fraction form
128,359,745.28/192,520,711.68 = 42,107,266.56/x - Step 3: Cross multiply
128,359,745.28x = 192,520,711.68 × 42,107,266.56 - Step 4: Simplify right side
128,359,745.28x = 8,106,520,925,030,666 - Step 5: Solve for x
x = 8,106,520,925,030,666/128,359,745.28 - Step 6: Final answer
x = 63,154,697.82
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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.