Finding the Fourth Proportional to 106,683.12, 147,159.36 and 68,979.60
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Solution
The fourth proportional to 106,683.12, 147,159.36 and 68,979.60 is: 95,150.89
Step by Step Solution
- Step 1: Write the proportion equation
106,683.12 : 147,159.36 = 68,979.60 : x - Step 2: Convert to fraction form
106,683.12/147,159.36 = 68,979.60/x - Step 3: Cross multiply
106,683.12x = 147,159.36 × 68,979.60 - Step 4: Simplify right side
106,683.12x = 10,150,993,789.06 - Step 5: Solve for x
x = 10,150,993,789.06/106,683.12 - Step 6: Final answer
x = 95,150.89
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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.