Finding the Fourth Proportional to 159,639.05, 220,301.07 and 87,045.84
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Solution
The fourth proportional to 159,639.05, 220,301.07 and 87,045.84 is: 120,122.81
Step by Step Solution
- Step 1: Write the proportion equation
159,639.05 : 220,301.07 = 87,045.84 : x - Step 2: Convert to fraction form
159,639.05/220,301.07 = 87,045.84/x - Step 3: Cross multiply
159,639.05x = 220,301.07 × 87,045.84 - Step 4: Simplify right side
159,639.05x = 19,176,291,364.63 - Step 5: Solve for x
x = 19,176,291,364.63/159,639.05 - Step 6: Final answer
x = 120,122.81
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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.