Finding the Fourth Proportional to 130,658.12, 195,996.30 and 51,772.12
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Solution
The fourth proportional to 130,658.12, 195,996.30 and 51,772.12 is: 77,661.79
Step by Step Solution
- Step 1: Write the proportion equation
130,658.12 : 195,996.30 = 51,772.12 : x - Step 2: Convert to fraction form
130,658.12/195,996.30 = 51,772.12/x - Step 3: Cross multiply
130,658.12x = 195,996.30 × 51,772.12 - Step 4: Simplify right side
130,658.12x = 10,147,143,963.16 - Step 5: Solve for x
x = 10,147,143,963.16/130,658.12 - Step 6: Final answer
x = 77,661.79
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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.