Finding the Fourth Proportional to 130,723.97, 195,591.12 and 77,444.55
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Solution
The fourth proportional to 130,723.97, 195,591.12 and 77,444.55 is: 115,873.68
Step by Step Solution
- Step 1: Write the proportion equation
130,723.97 : 195,591.12 = 77,444.55 : x - Step 2: Convert to fraction form
130,723.97/195,591.12 = 77,444.55/x - Step 3: Cross multiply
130,723.97x = 195,591.12 × 77,444.55 - Step 4: Simplify right side
130,723.97x = 15,147,466,272.40 - Step 5: Solve for x
x = 15,147,466,272.40/130,723.97 - Step 6: Final answer
x = 115,873.68
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.