Finding the Fourth Proportional to 101,928.36, 140,612.04 and 66,129.60
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Solution
The fourth proportional to 101,928.36, 140,612.04 and 66,129.60 is: 91,226.99
Step by Step Solution
- Step 1: Write the proportion equation
101,928.36 : 140,612.04 = 66,129.60 : x - Step 2: Convert to fraction form
101,928.36/140,612.04 = 66,129.60/x - Step 3: Cross multiply
101,928.36x = 140,612.04 × 66,129.60 - Step 4: Simplify right side
101,928.36x = 9,298,617,960.38 - Step 5: Solve for x
x = 9,298,617,960.38/101,928.36 - Step 6: Final answer
x = 91,226.99
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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.