Finding the Fourth Proportional to 145,863.75, 201,017.18 and 105,509.08
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Solution
The fourth proportional to 145,863.75, 201,017.18 and 105,509.08 is: 145,403.75
Step by Step Solution
- Step 1: Write the proportion equation
145,863.75 : 201,017.18 = 105,509.08 : x - Step 2: Convert to fraction form
145,863.75/201,017.18 = 105,509.08/x - Step 3: Cross multiply
145,863.75x = 201,017.18 × 105,509.08 - Step 4: Simplify right side
145,863.75x = 21,209,136,193.36 - Step 5: Solve for x
x = 21,209,136,193.36/145,863.75 - Step 6: Final answer
x = 145,403.75
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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.