Finding the Fourth Proportional to 101,305.64, 139,799.84 and 55,982.63
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Solution
The fourth proportional to 101,305.64, 139,799.84 and 55,982.63 is: 77,254.95
Step by Step Solution
- Step 1: Write the proportion equation
101,305.64 : 139,799.84 = 55,982.63 : x - Step 2: Convert to fraction form
101,305.64/139,799.84 = 55,982.63/x - Step 3: Cross multiply
101,305.64x = 139,799.84 × 55,982.63 - Step 4: Simplify right side
101,305.64x = 7,826,362,786.37 - Step 5: Solve for x
x = 7,826,362,786.37/101,305.64 - Step 6: Final answer
x = 77,254.95
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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.