Finding the Fourth Proportional to 115,813.19, 159,820.67 and 65,512.19
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Solution
The fourth proportional to 115,813.19, 159,820.67 and 65,512.19 is: 90,405.95
Step by Step Solution
- Step 1: Write the proportion equation
115,813.19 : 159,820.67 = 65,512.19 : x - Step 2: Convert to fraction form
115,813.19/159,820.67 = 65,512.19/x - Step 3: Cross multiply
115,813.19x = 159,820.67 × 65,512.19 - Step 4: Simplify right side
115,813.19x = 10,470,201,463.64 - Step 5: Solve for x
x = 10,470,201,463.64/115,813.19 - Step 6: Final answer
x = 90,405.95
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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.