Finding the Fourth Proportional to 145,879.60, 201,313.80 and 78,811.60
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Solution
The fourth proportional to 145,879.60, 201,313.80 and 78,811.60 is: 108,759.98
Step by Step Solution
- Step 1: Write the proportion equation
145,879.60 : 201,313.80 = 78,811.60 : x - Step 2: Convert to fraction form
145,879.60/201,313.80 = 78,811.60/x - Step 3: Cross multiply
145,879.60x = 201,313.80 × 78,811.60 - Step 4: Simplify right side
145,879.60x = 15,865,862,680.08 - Step 5: Solve for x
x = 15,865,862,680.08/145,879.60 - Step 6: Final answer
x = 108,759.98
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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.