Finding the Fourth Proportional to 125,972.20, 188,739.42 and 105,167.08
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Solution
The fourth proportional to 125,972.20, 188,739.42 and 105,167.08 is: 157,567.89
Step by Step Solution
- Step 1: Write the proportion equation
125,972.20 : 188,739.42 = 105,167.08 : x - Step 2: Convert to fraction form
125,972.20/188,739.42 = 105,167.08/x - Step 3: Cross multiply
125,972.20x = 188,739.42 × 105,167.08 - Step 4: Simplify right side
125,972.20x = 19,849,173,682.29 - Step 5: Solve for x
x = 19,849,173,682.29/125,972.20 - Step 6: Final answer
x = 157,567.89
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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.