Finding the Fourth Proportional to 140,553.05, 193,964.75 and 76,889.48
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Solution
The fourth proportional to 140,553.05, 193,964.75 and 76,889.48 is: 106,108.32
Step by Step Solution
- Step 1: Write the proportion equation
140,553.05 : 193,964.75 = 76,889.48 : x - Step 2: Convert to fraction form
140,553.05/193,964.75 = 76,889.48/x - Step 3: Cross multiply
140,553.05x = 193,964.75 × 76,889.48 - Step 4: Simplify right side
140,553.05x = 14,913,848,866.29 - Step 5: Solve for x
x = 14,913,848,866.29/140,553.05 - Step 6: Final answer
x = 106,108.32
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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.