Finding the Fourth Proportional to 141,946.26, 195,885.72 and 78,288.09
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Solution
The fourth proportional to 141,946.26, 195,885.72 and 78,288.09 is: 108,037.50
Step by Step Solution
- Step 1: Write the proportion equation
141,946.26 : 195,885.72 = 78,288.09 : x - Step 2: Convert to fraction form
141,946.26/195,885.72 = 78,288.09/x - Step 3: Cross multiply
141,946.26x = 195,885.72 × 78,288.09 - Step 4: Simplify right side
141,946.26x = 15,335,518,877.07 - Step 5: Solve for x
x = 15,335,518,877.07/141,946.26 - Step 6: Final answer
x = 108,037.50
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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.