Finding the Fourth Proportional to 133,489.50, 184,236.12 and 76,128.95
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Solution
The fourth proportional to 133,489.50, 184,236.12 and 76,128.95 is: 105,069.70
Step by Step Solution
- Step 1: Write the proportion equation
133,489.50 : 184,236.12 = 76,128.95 : x - Step 2: Convert to fraction form
133,489.50/184,236.12 = 76,128.95/x - Step 3: Cross multiply
133,489.50x = 184,236.12 × 76,128.95 - Step 4: Simplify right side
133,489.50x = 14,025,701,446.49 - Step 5: Solve for x
x = 14,025,701,446.49/133,489.50 - Step 6: Final answer
x = 105,069.70
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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.