Finding the Fourth Proportional to 133,280.08, 199,821.36 and 80,677.12
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Solution
The fourth proportional to 133,280.08, 199,821.36 and 80,677.12 is: 120,955.90
Step by Step Solution
- Step 1: Write the proportion equation
133,280.08 : 199,821.36 = 80,677.12 : x - Step 2: Convert to fraction form
133,280.08/199,821.36 = 80,677.12/x - Step 3: Cross multiply
133,280.08x = 199,821.36 × 80,677.12 - Step 4: Simplify right side
133,280.08x = 16,121,011,839.28 - Step 5: Solve for x
x = 16,121,011,839.28/133,280.08 - Step 6: Final answer
x = 120,955.90
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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.