Finding the Fourth Proportional to 101,256.19, 139,734.84 and 55,933.99
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Solution
The fourth proportional to 101,256.19, 139,734.84 and 55,933.99 is: 77,189.62
Step by Step Solution
- Step 1: Write the proportion equation
101,256.19 : 139,734.84 = 55,933.99 : x - Step 2: Convert to fraction form
101,256.19/139,734.84 = 55,933.99/x - Step 3: Cross multiply
101,256.19x = 139,734.84 × 55,933.99 - Step 4: Simplify right side
101,256.19x = 7,815,927,143.21 - Step 5: Solve for x
x = 7,815,927,143.21/101,256.19 - Step 6: Final answer
x = 77,189.62
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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.