Finding the Fourth Proportional to 140,335.36, 193,660.52 and 76,671.78
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Solution
The fourth proportional to 140,335.36, 193,660.52 and 76,671.78 is: 105,805.81
Step by Step Solution
- Step 1: Write the proportion equation
140,335.36 : 193,660.52 = 76,671.78 : x - Step 2: Convert to fraction form
140,335.36/193,660.52 = 76,671.78/x - Step 3: Cross multiply
140,335.36x = 193,660.52 × 76,671.78 - Step 4: Simplify right side
140,335.36x = 14,848,296,784.13 - Step 5: Solve for x
x = 14,848,296,784.13/140,335.36 - Step 6: Final answer
x = 105,805.81
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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.