Finding the Fourth Proportional to 106,140.17, 146,683.60 and 86,989.75
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Solution
The fourth proportional to 106,140.17, 146,683.60 and 86,989.75 is: 120,218.09
Step by Step Solution
- Step 1: Write the proportion equation
106,140.17 : 146,683.60 = 86,989.75 : x - Step 2: Convert to fraction form
106,140.17/146,683.60 = 86,989.75/x - Step 3: Cross multiply
106,140.17x = 146,683.60 × 86,989.75 - Step 4: Simplify right side
106,140.17x = 12,759,969,108.92 - Step 5: Solve for x
x = 12,759,969,108.92/106,140.17 - Step 6: Final answer
x = 120,218.09
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1.5x scale
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.