Finding the Fourth Proportional to 145,948.92, 201,409.74 and 78,880.92
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Solution
The fourth proportional to 145,948.92, 201,409.74 and 78,880.92 is: 108,855.79
Step by Step Solution
- Step 1: Write the proportion equation
145,948.92 : 201,409.74 = 78,880.92 : x - Step 2: Convert to fraction form
145,948.92/201,409.74 = 78,880.92/x - Step 3: Cross multiply
145,948.92x = 201,409.74 × 78,880.92 - Step 4: Simplify right side
145,948.92x = 15,887,385,588.16 - Step 5: Solve for x
x = 15,887,385,588.16/145,948.92 - Step 6: Final answer
x = 108,855.79
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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.