Finding the Fourth Proportional to 115,782.40, 159,811.14 and 68,051.08
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Solution
The fourth proportional to 115,782.40, 159,811.14 and 68,051.08 is: 93,928.96
Step by Step Solution
- Step 1: Write the proportion equation
115,782.40 : 159,811.14 = 68,051.08 : x - Step 2: Convert to fraction form
115,782.40/159,811.14 = 68,051.08/x - Step 3: Cross multiply
115,782.40x = 159,811.14 × 68,051.08 - Step 4: Simplify right side
115,782.40x = 10,875,320,673.03 - Step 5: Solve for x
x = 10,875,320,673.03/115,782.40 - Step 6: Final answer
x = 93,928.96
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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.