Finding the Fourth Proportional to 127,869.84, 176,461.20 and 74,186.88
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Solution
The fourth proportional to 127,869.84, 176,461.20 and 74,186.88 is: 102,378.37
Step by Step Solution
- Step 1: Write the proportion equation
127,869.84 : 176,461.20 = 74,186.88 : x - Step 2: Convert to fraction form
127,869.84/176,461.20 = 74,186.88/x - Step 3: Cross multiply
127,869.84x = 176,461.20 × 74,186.88 - Step 4: Simplify right side
127,869.84x = 13,091,105,869.06 - Step 5: Solve for x
x = 13,091,105,869.06/127,869.84 - Step 6: Final answer
x = 102,378.37
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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.