Finding the Fourth Proportional to 125,919.14, 188,878.50 and 86,356.31
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Solution
The fourth proportional to 125,919.14, 188,878.50 and 86,356.31 is: 129,534.32
Step by Step Solution
- Step 1: Write the proportion equation
125,919.14 : 188,878.50 = 86,356.31 : x - Step 2: Convert to fraction form
125,919.14/188,878.50 = 86,356.31/x - Step 3: Cross multiply
125,919.14x = 188,878.50 × 86,356.31 - Step 4: Simplify right side
125,919.14x = 16,310,849,353.94 - Step 5: Solve for x
x = 16,310,849,353.94/125,919.14 - Step 6: Final answer
x = 129,534.32
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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.