Finding the Fourth Proportional to 101,249.99, 139,724.43 and 55,931.09
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Solution
The fourth proportional to 101,249.99, 139,724.43 and 55,931.09 is: 77,184.60
Step by Step Solution
- Step 1: Write the proportion equation
101,249.99 : 139,724.43 = 55,931.09 : x - Step 2: Convert to fraction form
101,249.99/139,724.43 = 55,931.09/x - Step 3: Cross multiply
101,249.99x = 139,724.43 × 55,931.09 - Step 4: Simplify right side
101,249.99x = 7,814,939,669.53 - Step 5: Solve for x
x = 7,814,939,669.53/101,249.99 - Step 6: Final answer
x = 77,184.60
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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.