Finding the Fourth Proportional to 194,478.12, 268,429.74 and 126,664.08
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Solution
The fourth proportional to 194,478.12, 268,429.74 and 126,664.08 is: 174,828.95
Step by Step Solution
- Step 1: Write the proportion equation
194,478.12 : 268,429.74 = 126,664.08 : x - Step 2: Convert to fraction form
194,478.12/268,429.74 = 126,664.08/x - Step 3: Cross multiply
194,478.12x = 268,429.74 × 126,664.08 - Step 4: Simplify right side
194,478.12x = 34,000,406,061.74 - Step 5: Solve for x
x = 34,000,406,061.74/194,478.12 - Step 6: Final answer
x = 174,828.95
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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.