Finding the Fourth Proportional to 127,739.42, 176,271.96 and 76,721.84
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Solution
The fourth proportional to 127,739.42, 176,271.96 and 76,721.84 is: 105,871.07
Step by Step Solution
- Step 1: Write the proportion equation
127,739.42 : 176,271.96 = 76,721.84 : x - Step 2: Convert to fraction form
127,739.42/176,271.96 = 76,721.84/x - Step 3: Cross multiply
127,739.42x = 176,271.96 × 76,721.84 - Step 4: Simplify right side
127,739.42x = 13,523,908,230.25 - Step 5: Solve for x
x = 13,523,908,230.25/127,739.42 - Step 6: Final answer
x = 105,871.07
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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.