Finding the Fourth Proportional to 100,278.36, 138,379.86 and 59,968.26
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Solution
The fourth proportional to 100,278.36, 138,379.86 and 59,968.26 is: 82,753.64
Step by Step Solution
- Step 1: Write the proportion equation
100,278.36 : 138,379.86 = 59,968.26 : x - Step 2: Convert to fraction form
100,278.36/138,379.86 = 59,968.26/x - Step 3: Cross multiply
100,278.36x = 138,379.86 × 59,968.26 - Step 4: Simplify right side
100,278.36x = 8,298,399,423.24 - Step 5: Solve for x
x = 8,298,399,423.24/100,278.36 - Step 6: Final answer
x = 82,753.64
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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.