Finding the Fourth Proportional to 128,114.16, 176,797.69 and 71,525.53
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Solution
The fourth proportional to 128,114.16, 176,797.69 and 71,525.53 is: 98,705.32
Step by Step Solution
- Step 1: Write the proportion equation
128,114.16 : 176,797.69 = 71,525.53 : x - Step 2: Convert to fraction form
128,114.16/176,797.69 = 71,525.53/x - Step 3: Cross multiply
128,114.16x = 176,797.69 × 71,525.53 - Step 4: Simplify right side
128,114.16x = 12,645,548,522.21 - Step 5: Solve for x
x = 12,645,548,522.21/128,114.16 - Step 6: Final answer
x = 98,705.32
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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.