Finding the Fourth Proportional to 128,202.84, 176,911.56 and 70,841.88
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Solution
The fourth proportional to 128,202.84, 176,911.56 and 70,841.88 is: 97,757.18
Step by Step Solution
- Step 1: Write the proportion equation
128,202.84 : 176,911.56 = 70,841.88 : x - Step 2: Convert to fraction form
128,202.84/176,911.56 = 70,841.88/x - Step 3: Cross multiply
128,202.84x = 176,911.56 × 70,841.88 - Step 4: Simplify right side
128,202.84x = 12,532,747,504.13 - Step 5: Solve for x
x = 12,532,747,504.13/128,202.84 - Step 6: Final answer
x = 97,757.18
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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.