Finding the Fourth Proportional to 128,150.16, 176,847.60 and 71,563.68
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Solution
The fourth proportional to 128,150.16, 176,847.60 and 71,563.68 is: 98,758.09
Step by Step Solution
- Step 1: Write the proportion equation
128,150.16 : 176,847.60 = 71,563.68 : x - Step 2: Convert to fraction form
128,150.16/176,847.60 = 71,563.68/x - Step 3: Cross multiply
128,150.16x = 176,847.60 × 71,563.68 - Step 4: Simplify right side
128,150.16x = 12,655,865,055.17 - Step 5: Solve for x
x = 12,655,865,055.17/128,150.16 - Step 6: Final answer
x = 98,758.09
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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.