Finding the Fourth Proportional to 129,560.16, 193,901.28 and 79,671.84
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Solution
The fourth proportional to 129,560.16, 193,901.28 and 79,671.84 is: 119,237.83
Step by Step Solution
- Step 1: Write the proportion equation
129,560.16 : 193,901.28 = 79,671.84 : x - Step 2: Convert to fraction form
129,560.16/193,901.28 = 79,671.84/x - Step 3: Cross multiply
129,560.16x = 193,901.28 × 79,671.84 - Step 4: Simplify right side
129,560.16x = 15,448,471,755.96 - Step 5: Solve for x
x = 15,448,471,755.96/129,560.16 - Step 6: Final answer
x = 119,237.83
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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.