Finding the Fourth Proportional to 68,143.84, 102,215.68 and 18,895.84
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Solution
The fourth proportional to 68,143.84, 102,215.68 and 18,895.84 is: 28,343.74
Step by Step Solution
- Step 1: Write the proportion equation
68,143.84 : 102,215.68 = 18,895.84 : x - Step 2: Convert to fraction form
68,143.84/102,215.68 = 18,895.84/x - Step 3: Cross multiply
68,143.84x = 102,215.68 × 18,895.84 - Step 4: Simplify right side
68,143.84x = 1,931,451,134.77 - Step 5: Solve for x
x = 1,931,451,134.77/68,143.84 - Step 6: Final answer
x = 28,343.74
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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.