Finding the Fourth Proportional to 127,261.80, 190,892.70 and 74,117.70
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Solution
The fourth proportional to 127,261.80, 190,892.70 and 74,117.70 is: 111,176.55
Step by Step Solution
- Step 1: Write the proportion equation
127,261.80 : 190,892.70 = 74,117.70 : x - Step 2: Convert to fraction form
127,261.80/190,892.70 = 74,117.70/x - Step 3: Cross multiply
127,261.80x = 190,892.70 × 74,117.70 - Step 4: Simplify right side
127,261.80x = 14,148,527,870.79 - Step 5: Solve for x
x = 14,148,527,870.79/127,261.80 - Step 6: Final answer
x = 111,176.55
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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.