Finding the Fourth Proportional to 128,977.84, 193,237.84 and 53,932.56
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Solution
The fourth proportional to 128,977.84, 193,237.84 and 53,932.56 is: 80,803.12
Step by Step Solution
- Step 1: Write the proportion equation
128,977.84 : 193,237.84 = 53,932.56 : x - Step 2: Convert to fraction form
128,977.84/193,237.84 = 53,932.56/x - Step 3: Cross multiply
128,977.84x = 193,237.84 × 53,932.56 - Step 4: Simplify right side
128,977.84x = 10,421,811,400.07 - Step 5: Solve for x
x = 10,421,811,400.07/128,977.84 - Step 6: Final answer
x = 80,803.12
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1.5x scale
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.