Finding the Fourth Proportional to 138,873.80, 208,310.70 and 130,125.80
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Solution
The fourth proportional to 138,873.80, 208,310.70 and 130,125.80 is: 195,188.70
Step by Step Solution
- Step 1: Write the proportion equation
138,873.80 : 208,310.70 = 130,125.80 : x - Step 2: Convert to fraction form
138,873.80/208,310.70 = 130,125.80/x - Step 3: Cross multiply
138,873.80x = 208,310.70 × 130,125.80 - Step 4: Simplify right side
138,873.80x = 27,106,596,486.06 - Step 5: Solve for x
x = 27,106,596,486.06/138,873.80 - Step 6: Final answer
x = 195,188.70
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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.