Finding the Fourth Proportional to 135,082.79, 186,423.08 and 89,689.71
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Solution
The fourth proportional to 135,082.79, 186,423.08 and 89,689.71 is: 123,777.66
Step by Step Solution
- Step 1: Write the proportion equation
135,082.79 : 186,423.08 = 89,689.71 : x - Step 2: Convert to fraction form
135,082.79/186,423.08 = 89,689.71/x - Step 3: Cross multiply
135,082.79x = 186,423.08 × 89,689.71 - Step 4: Simplify right side
135,082.79x = 16,720,231,534.06 - Step 5: Solve for x
x = 16,720,231,534.06/135,082.79 - Step 6: Final answer
x = 123,777.66
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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.