Finding the Fourth Proportional to 185,389.12, 255,701.10 and 121,703.68
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Solution
The fourth proportional to 185,389.12, 255,701.10 and 121,703.68 is: 167,861.87
Step by Step Solution
- Step 1: Write the proportion equation
185,389.12 : 255,701.10 = 121,703.68 : x - Step 2: Convert to fraction form
185,389.12/255,701.10 = 121,703.68/x - Step 3: Cross multiply
185,389.12x = 255,701.10 × 121,703.68 - Step 4: Simplify right side
185,389.12x = 31,119,764,850.05 - Step 5: Solve for x
x = 31,119,764,850.05/185,389.12 - Step 6: Final answer
x = 167,861.87
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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.