Finding the Fourth Proportional to 140,557.92, 193,964.40 and 76,894.08
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Solution
The fourth proportional to 140,557.92, 193,964.40 and 76,894.08 is: 106,110.81
Step by Step Solution
- Step 1: Write the proportion equation
140,557.92 : 193,964.40 = 76,894.08 : x - Step 2: Convert to fraction form
140,557.92/193,964.40 = 76,894.08/x - Step 3: Cross multiply
140,557.92x = 193,964.40 × 76,894.08 - Step 4: Simplify right side
140,557.92x = 14,914,714,090.75 - Step 5: Solve for x
x = 14,914,714,090.75/140,557.92 - Step 6: Final answer
x = 106,110.81
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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.