Finding the Fourth Proportional to 135,353.10, 186,807.29 and 77,981.49
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Solution
The fourth proportional to 135,353.10, 186,807.29 and 77,981.49 is: 107,625.99
Step by Step Solution
- Step 1: Write the proportion equation
135,353.10 : 186,807.29 = 77,981.49 : x - Step 2: Convert to fraction form
135,353.10/186,807.29 = 77,981.49/x - Step 3: Cross multiply
135,353.10x = 186,807.29 × 77,981.49 - Step 4: Simplify right side
135,353.10x = 14,567,510,427.15 - Step 5: Solve for x
x = 14,567,510,427.15/135,353.10 - Step 6: Final answer
x = 107,625.99
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1.5x scale
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.