Finding the Fourth Proportional to 127,828.35, 176,416.25 and 76,857.68
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Solution
The fourth proportional to 127,828.35, 176,416.25 and 76,857.68 is: 106,071.49
Step by Step Solution
- Step 1: Write the proportion equation
127,828.35 : 176,416.25 = 76,857.68 : x - Step 2: Convert to fraction form
127,828.35/176,416.25 = 76,857.68/x - Step 3: Cross multiply
127,828.35x = 176,416.25 × 76,857.68 - Step 4: Simplify right side
127,828.35x = 13,558,943,746.05 - Step 5: Solve for x
x = 13,558,943,746.05/127,828.35 - Step 6: Final answer
x = 106,071.49
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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.