Finding the Fourth Proportional to 127,810.12, 176,378.16 and 71,220.28
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Solution
The fourth proportional to 127,810.12, 176,378.16 and 71,220.28 is: 98,284.09
Step by Step Solution
- Step 1: Write the proportion equation
127,810.12 : 176,378.16 = 71,220.28 : x - Step 2: Convert to fraction form
127,810.12/176,378.16 = 71,220.28/x - Step 3: Cross multiply
127,810.12x = 176,378.16 × 71,220.28 - Step 4: Simplify right side
127,810.12x = 12,561,701,941.08 - Step 5: Solve for x
x = 12,561,701,941.08/127,810.12 - Step 6: Final answer
x = 98,284.09
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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.