Finding the Fourth Proportional to 115,168.01, 159,029.97 and 72,219.70
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Solution
The fourth proportional to 115,168.01, 159,029.97 and 72,219.70 is: 99,724.71
Step by Step Solution
- Step 1: Write the proportion equation
115,168.01 : 159,029.97 = 72,219.70 : x - Step 2: Convert to fraction form
115,168.01/159,029.97 = 72,219.70/x - Step 3: Cross multiply
115,168.01x = 159,029.97 × 72,219.70 - Step 4: Simplify right side
115,168.01x = 11,485,095,929.26 - Step 5: Solve for x
x = 11,485,095,929.26/115,168.01 - Step 6: Final answer
x = 99,724.71
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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.